Answer:
B. J'ai regardé un film
Step-by-step explanation:
The passé composé is noticeable by the first and second major point of the sentence. In this case, it would be the words "Je" and "regarde". The passé composé is the past tense, but the sentence is currently in the present tense. So we would need to conjugate "Je" into becoming "J'ai", and "regarde" into becoming "regardé".
'A.' is the imperfect tense.
'C.' is the negative passé composé.
'D.' is the future tense.
Therefore, 'B.' is the correct answer.