Question

what information mainly does the following quotation convey?
\in study after study, of composers, basketball players, fiction writers, ice skaters, concert pianists, chess players, master criminals, and what have you, this number comes up again and again. of course, this doesnt address why some people get more out of their practice sessions than others do. but no one has yet found a case in which true world-class expertise was accomplished in less time.\
a. ice skaters can achieve mastery more quickly than chess players.
b. all people get the same results out of their practice sessions.
c. the time required for mastery is consistent across a wide variety of skills.
d. sometimes true world-class expertise can be achieved in fewer than ten thousand hours.

Explanation:

The quotation states that across many different fields (composers, athletes, writers, etc.), a consistent time-related number appears for achieving world-class expertise, and no case of such expertise being done in less time exists. Option A is incorrect as no comparison of speed between groups is made. Option B is wrong because the text notes some people get more from practice. Option D contradicts the final line that no expertise was achieved in less time. Option C matches the core idea that the time for mastery is consistent across diverse skills.

Answer:

C. The time required for mastery is consistent across a wide variety of skills.