Final answer:
The correct verb form is 'vivían' for the sentence provided.
Explanation:
The correct option of the verb in the correct form and tense is: vivían. When I was a child, in my favorite fairy tales, the princesses lived in beautiful houses. The verb 'vivían' is in the imperfect past tense, matching the context of the sentence.
Learn more about Verb forms in Spanish here:
https://brainly.com/question/42311791
