Gregorio y carla because they get more along abd they get each other
Empezar
empiezo empezamos
empiezas empezamis
empieza. empiezan
Hello!

The subject of this sentence is "Yo" (I), so we must use the first-person singular conjugation.
Thus, the correct conjugation ends with an "o", or "Pruebo". Choice A is the correct answer.