Answer: Cada verano, Claudia y yo visitábamos la playa en las vacaciones.
Explanation: We must choose the right conjugation that completes the sentence "Cada verano, Claudia y yo ________________ la playa en las vacaciones."
The first step is identificating the subjects, this is, whoi is doing the action.
In this case the action is being done by "Clauida y yo", then we must select one of the plural persons, and because the one talking is included in the group (because it says "..y yo..") the correct verbal person is "nosotros"
Then, the correct conjugation would be "nosotros visitábamos"
and the complete sentence is:
Cada verano, Claudia y yo visitábamos la playa en las vacaciones.
