Choose the option in which the NARRATION in the given sentence has been correctly changed.
I asked my brother, ”What do you want me to do now ?”

Correct option is D

The correct answer is (d) I asked my brother what he wanted me to do then.
When changing from direct to indirect speech, certain grammar rules apply. The sentence is an example of a reporting question, not a yes/no question, and should follow the rule for embedded questions in indirect speech.

• The reporting verb asked stays.

• The subject you (referring to the brother) becomes he.

• The verb do changes to do in the past form = did = wanted me to do.

• Now is a time indicator and must change to then.

Also, in reported speech, the word order becomes subject + verb (not question form), hence we say:
"what he wanted me to do", not "what did he want me to do."