Choose the correct indirect speech: He said to her, "Which books did you buy from this shop?"

He asked her which books she had bought from that shop.

He asked her she has bought books from that shop.

He asked her which books she bought from that shop.

None of these

Reported question → "He said to her" changes to "He asked her".

Simple past tense "did you buy" changes to past perfect → "had bought".

"This shop" becomes "that shop" in indirect speech.