The imperfect form of the verb given in the sentence as "Rosa vivía en Londres" is; Correct.
An imperfect verb in spanish is used as one that combines a reference to a past time and a reference to a continuing or repeated event.
Now, the meaning of the imperfect verb given in the statement which is;
"vivía" means "lived"
Now, this imperfect verb is correct because it tells us that Rosa once lived in London and that verb to denotes that it was a continuing event that means she was staying there before.
Read more on imperfect verbs in spanish at; https://brainly.com/question/13934109
