Answer:The correct answer is Cuándo era niña, me gustaban libros.
Explanation: The reason why this is correct is because the second choice uses “mi” when it is supposed to be “me” for the sentence to make sense. The third choice does not have the ‘ over the “a” in Cuándo which means it is spelled wrong. Lastly the last answer is wrong because it has question marks which when the reader reads it the question is not complete therefore the correct answer is the first one