Select the correct indirect form of the given sentence.

She said to me, "What can I do for you?”'

She asked me what she could do for me.

The correct indirect form of the given sentence is:

She asked me what she could do for me.

The other options are incorrect for the following reasons:

• She asked me what she can do for me. - The present tense modal verb "can" is not appropriate in indirect speech, as the speaker is reporting what was said in the past.
• She asked me whether she can do anything for me. - The word "whether" is unnecessary in indirect speech.