Correct option is A
The correct improvement for the highlighted part of the sentence
"'Did you brought your drawing books?' the teacher asked the students." is
"Did you bring."
· The correction "Did you bring" adjusts the verb to the base form "bring," which is appropriate for forming questions in the simple past tense.
· Using "bring" in the question maintains the grammatical integrity of the sentence structure, correcting the error in the original verb tense.
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Other options:
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(b) "Do you bringing" and
(c) "Do you brought" are grammatically incorrect.
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(d) "No improvement" does not correct the misuse of "brought" in the question.