The question is divided into four parts where one of the parts may or may not contain an error. Choose the part that has the error as your answer. If all the parts are correct choose “No error” as the answer choice.
It is recommend to (A)/ get 7-9 hours of sleep per (B)/ night to allow the body (C)/ to repair and rejuvenate. (D)

Correct option is A

Part (A) contains an error.
The error in part (A) is the use of "recommend" instead of " recommended." In the given sentence, the verb should be in the past tense to make it grammatically correct.
Therefore, the corrected sentence would be: "It is recommended to get 7-9 hours of sleep per night to allow the body to repair and rejuvenate."
This change to the past tense makes the sentence consistent with the rest of the sentence structure.