Question

Low levels of stress

improve some people’s performance and worsen the performance of others.

worsen performance by increasing a person’s worry.

improve performance by making a person more alert and focused.

have no effect on performance either way.

Answer 1

Improve performance by making a person more alert and focused.

Step-by-step explanation:

"Low levels of stress can help you focus your attention on a task and give it your best effort. As the level of stress increases, though, you'll begin to worry too much about the outcome. High levels of stress actually prevent all of us--athletes, actors, students, everyone--from doing our best."

Answer 2

Improve performance by making a person more alert and focused.