It’s the first one
Comencé
He (Which should be El, but anyway) visto is not correct, because you are talking about someone else. Yo Tengo is correct, because you are staying that you have seen.
Answer:
Isabel y Liana tienen un buen maestro.
Explanation: It can't be any of the other options because tengo means I have in English, tenemos means we have, and tienes means they have. As you can see none of these will apply to the sentence. In English the sentence is saying Isabel and luna have a good teacher.
Conocí it’s correct because it’s past tense
D. regatear. ............
