Information and IdeasMediumInference from an anomaly in wear
Information and Ideas practice question
The stone steps up to the library are worn into a hollow in the middle, except for the third step, which is nearly flat. The library's records show that the third step was replaced in 1990. This suggests that ____
Which choice most logically completes the text?
- A. the other steps are far older than 1990 and have been worn by generations of visitors.Correct
- B. visitors skip the third step.
- C. the third step is made of harder stone.
- D. the library opened in 1990.
Answer: A. the other steps are far older than 1990 and have been worn by generations of visitors.
The replaced step is flat; the rest are hollowed by long use.
Why the other answers are wrong
- B. visitors skip the third step.
- Nothing suggests avoidance; the step is newer.
- C. the third step is made of harder stone.
- Possible, but the replacement date is the explanation the text supplies.
- D. the library opened in 1990.
- The other steps' wear implies use long before 1990.
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