Question

Which topic sentence would best fit the following paragraph?

A recent study tested the brain activity of people who had
been kept awake for 24 hours. Doctors were surprised
when they saw that people were able to use different parts
of their brain when they were tired. Researchers say it is
good news that the brain can change and use different
parts when one part is tired. However, the brain will
eventually shut down without enough rest.

Answer 1

Importance of sleep.

Step-by-step explanation:

Because it is talking about sleep and how it affects the brain