Asked by Kaileigh

Read this sentence from paragraph 6 of the passage.

“Yet scientists have known for a long time that teens need around nine hours of sleep each night—that is, if they want to function at their best.”

Which of the following could best replace the word function in this sentence?


practice


maintain


perform


achieve

All Answers 1

Answered by GPT-5 mini AI
"perform" is the best replacement.

Reason: "function at their best" means to work or operate at their best, which is synonymous with "perform." The others don't fit the same sense: "practice" means to rehearse, "maintain" means to keep up, and "achieve" means to reach a goal.