Question

Smartphones have made it harder for people to think clearly.
Select the piece of evidence that best supports this claim.
A. Since smartphones first became popular, the average person's attention span has fallen from twelve seconds to eight.
B. Smartphones have enabled people to access any information they want to know, at any time, almost anywhere in the world.

Answer 1

A. The drop in average attention span from twelve seconds to eight directly supports the claim that smartphones make it harder to think clearly.