Adult Literacy Advanced Quiz: Citing Evidence

At 10:15 a.m., a conveyor at a food-packaging plant began vibrating sharply. Following the plant's safety procedure, the maintenance technician stopped the machine and attached a warning tag. A production supervisor asked whether the conveyor could be restarted briefly to clear an order backlog, but the technician refused until the main bearing could be inspected. The inspection revealed a cracked bearing that required replacement. Because the plant did not keep that bearing in inventory, a part had to be brought from a supplier across town, and production resumed at 3:00 p.m. The incident report stated that the shutdown followed safety protocol and may have prevented more extensive equipment damage. It also recommended stocking the bearing because most of the downtime occurred while employees waited for the replacement part.

Which evidence best supports the conclusion that the length of the shutdown resulted mainly from an inventory problem rather than from the technician's decision?

In its annual report, the city stated that visits to public cooling centers had doubled, from 1,200 one summer to 2,400 the next. Officials presented the increase as evidence that the centers were reaching more residents during extreme heat. An independent auditor, however, found that the earlier figure counted each visitor once, while the newer figure counted every entry; a resident who visited on five days appeared five times. The auditor also noted that no evening centers operated in two neighborhoods with high rates of heat-related illness. A telephone survey did show that citywide awareness of the cooling-center program had increased substantially. The auditor concluded that the available evidence demonstrated stronger publicity but did not establish how many additional residents had actually received protection.

Which quotation provides the strongest evidence for the auditor's conclusion that the reported increase does not prove that more individual residents were served?

Researchers studying urban heat examined three neighborhoods where the city had planted rows of street trees. Even before planting, the selected blocks differed from nearby blocks: they generally had wider sidewalks, newer buildings, and more extensive irrigation. These differences made a simple comparison between shaded and unshaded blocks unreliable. However, measurements taken for three summers before and three summers after planting showed that surface temperatures declined modestly on planted blocks relative to nearby unplanted blocks. The decline was greatest where most of the young trees survived and developed broad canopies; it was smallest where drought killed many trees. The researchers cautioned that the study could not isolate every influence on temperature, but they argued that the pattern was consistent with trees contributing to the measured cooling.

Which evidence most strongly supports the researchers' qualified interpretation that the trees contributed to cooling, even though other factors may also have mattered?

A workplace-wellness vendor studied employees at four call centers and reported that workers who took frequent five-minute breaks made 20 percent fewer data-entry errors. The vendor's brochure described the finding as proof that scheduled microbreaks increase productivity. An internal analyst urged caution. Employees had volunteered for the break program rather than being assigned to it, and participating teams tended to have supervisors who already encouraged careful work and reported lower staff turnover before the program began. In addition, the study measured errors but not the total number of calls completed. The analyst agreed that the results justified a larger trial but said the existing study could not determine whether breaks themselves produced the difference or whether participating workers and teams were already different in relevant ways.

Which evidence most strongly supports the analyst's caution about claiming that microbreaks caused the lower error rate?

Minutes from a city council meeting describe two options for renovating the central market. Under the first option, the market would close completely for ten weeks, allowing the contractor to finish quickly and at the lowest cost. Under the second, work would proceed in phases for sixteen weeks while at least half of the vendor stalls remained open. The phased option would cost more because crews would repeatedly move barriers and equipment. Several vendors explained that even a short full closure could endanger businesses that depend on weekly sales and have little cash in reserve. The council approved the phased plan and used money from a building-maintenance reserve to cover the additional expense. Council members also required the contractor to publish a weekly schedule so customers would know which entrances and stalls remained accessible.

Which evidence best supports the interpretation that the council accepted greater cost and delay as a tradeoff for protecting vendors' livelihoods?

New appliance labels proposed by a consumer agency would display an estimated product lifespan and a repairability score. Manufacturers argue that the labels would help buyers compare products and reward durable design. Independent repair technicians support the proposal but warn that a favorable score could mislead consumers if replacement parts, service manuals, or diagnostic software remain unavailable. A consumer survey found that buyers valued durability, yet many still replaced appliances when a battery or control panel cost nearly half as much as a new product. The article's author endorses clearer labels but argues that disclosure is only one element of meaningful repair access. Without reasonably priced parts and usable instructions, the author writes, consumers may know that a product should be repairable while remaining unable to repair it.

Which evidence best supports the interpretation that the author distinguishes being informed about repairability from having a practical ability to obtain repairs?

A county grant proposal seeks funds to purchase former farmland along a river and restore it as wetland. Regional water models indicate that the restored floodplain would hold storm water upstream and reduce the height of some flood peaks. The proposal also predicts that trails and bird-watching areas could attract visitors, although sections would close during nesting season and severe weather. Officials in a nearby town support the project but note that several recent street floods occurred when undersized storm drains could not carry intense local rainfall. The proposal therefore describes wetland restoration as one part of a broader flood strategy that also includes drain replacement, updated emergency routes, and restrictions on new construction in low-lying areas.

Which evidence best supports the interpretation that the wetland project may reduce flood risk but cannot by itself eliminate the area's flooding problems?

A public library introduced free workshops explaining how to apply for city services online. Although all flyers were translated into four commonly spoken languages, attendance from several immigrant neighborhoods remained low. Staff members had displayed the flyers inside library branches and posted them on the library's website. During interviews, residents who rarely used the library said they had not heard about the workshops. Leaders of neighborhood associations and faith organizations said they would be willing to distribute announcements through their own networks. After the library began working with those groups, workshop attendance from the targeted neighborhoods more than doubled, even though the wording and translations on the flyers did not change. The library's director concluded that accessible language matters, but information must also travel through channels the intended audience regularly uses and trusts.

Which evidence best supports the director's interpretation that translation alone was insufficient because the original distribution method failed to reach the intended audience?

Six months after the city converted one downtown traffic lane into a bus-only lane, average bus travel times during rush hour had improved by 18 percent and weekday ridership had increased by 9 percent. Drivers reported longer delays on two parallel streets, while delivery companies said they were gradually shifting deliveries to earlier hours. Sales information from downtown merchants was mixed: some businesses reported losses, while others reported no change or modest gains. Critics called for immediate removal of the lane, arguing that congestion had merely moved elsewhere. In an editorial, the newspaper responded that six months was too short a period for businesses and traffic patterns to adjust fully. It recommended keeping the lane for another year while adding designated loading areas and monitoring congestion, bus reliability, and retail activity each quarter.

Which evidence best supports the interpretation that the editorial offers conditional support for the bus lane rather than an unconditional endorsement?

A regional distribution center tested an alternative schedule under which employees could work four ten-hour shifts instead of five eight-hour shifts. Employees still had to cover the center's busiest loading periods, so the alternative shift began at 5:30 a.m. Initial enrollment was high, but after one month only 38 percent of those who had enrolled remained in the pilot. In interviews, several caregivers said they valued having an extra weekday free but could not find child care before dawn. Other employees noted that the first public bus arrived after the shift began. Participants who lived near the center were more likely to remain in the program. Productivity and overtime levels were nearly identical under both schedules. Managers concluded that a flexible arrangement may offer little practical flexibility unless employees can also manage the conditions surrounding it.

Which evidence from the passage best supports the interpretation that practical barriers, rather than dissatisfaction with the longer workday itself, limited participation?