I don't think it's either masculine or feminine, it's neither
Answer:
None
Explanation:
It´s actually an adjective so it can´t be femenine or masculine
But you can use it with people:
Ella es difícil (she is difficult)
El es difícil (he is difficult)
Hope it helps you:)
the answer is D, "ha cumplido"
ok your lesson is very simple but I don't want to be a part of the team
you is active and because you re is very nice