Main Idea Practice Test

Passage: In many workplaces, remote meetings have become common, but their success depends on more than a stable internet connection. Clear communication requires deliberate habits, especially when people cannot rely on body language or quick side conversations. Teams that treat online meetings as casual replacements for in-person discussions often experience confusion, repeated work, and frustration.

Several simple practices can make a difference. One manager begins each meeting with a brief agenda and ends by restating decisions, so no one leaves uncertain about next steps. A project group uses shared notes that are visible during the call, allowing participants to correct misunderstandings immediately. Another team rotates the role of “timekeeper,” which prevents discussions from drifting and ensures quieter members have a chance to speak.

These examples suggest that remote collaboration works best when it is structured. By adopting intentional routines, teams can make online meetings efficient, inclusive, and less exhausting.

Question: Which sentence best summarizes the passage?

Passage: A recent scientific breakthrough has improved how quickly wildfires can be detected. Researchers developed a system that combines satellite images with ground-based sensors to identify early signs of smoke and unusual heat. The main advance is speed: instead of waiting for a human report, the system can alert emergency services within minutes, when a fire is still small.

In one test, sensors in a forested area registered a sudden rise in temperature and sent data to a central program that checked satellite images for matching heat patterns. The alert reached firefighters before the smoke was visible from nearby roads. Another pilot program placed sensors near communities at the edge of a wilderness region; when a small brush fire started, officials were able to issue warnings and close hiking trails quickly. Researchers also noted that the system can reduce false alarms by requiring agreement between multiple sources of data.

The broader implication is that earlier detection can save lives and ecosystems. By catching fires sooner, communities may reduce the chance that a small spark becomes a destructive disaster.

Question: Which of the following best captures the central idea of the text?