Ideas in Contemporary Life Passages - ISEE Lower Level Reading Comprehension

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"The Aging of Public Transportation Systems" by Matthew Minerd (2013)

As cities develop, their public transportation systems often show signs of aging that are mixed with aspects that are quite up-to-date. An example of such a situation can be found in the transportation system in Washington DC. This system is made up of a mixture of buses and trains that connect people to locations in DC, Maryland, and Virginia. While the system has been well maintained and updated over the years, it still shows evidence that certain sections are older than others.

This is particularly noticeable when one considers the multiple lines that connect in Washington DC itself. Within the city, there are five different sets of tracks that run in various directions and to sundry places. A number of the newer lines are in excellent condition and rarely break down; however, the case of the red line is somewhat different. This oldest line of the metro train system often has issues because of its age, experiencing a number of track and signal issues even at rush hour when the overall system is its most efficient. Admittedly, the transportation authority is working to update this line and make it less problematic. Still, until this work is completed, it is obvious to all who are familiar with the metro train system that the red line is the oldest and most out of date.

Why is it obvious to all who are familiar with the metro train system that the red line is the oldest and most out of date?

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Answer

Do not infer anything more than you can from the paragraph itself. Some of the wrong answers come up with details that are not at all justified. We are not told anything about rust on the tracks or the appearance of the signals. All that we know from the paragraph is that the red line is the most prone to break down due to its aging parts. This is what allows those familiar with the system to know that is the oldest and most out of date.

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