In Puerto Rico, a person might ask "What is going on?" just by wiggle the nose. In most Latin countries, specially in Puerto Rico nonverbal communication is present in their everyday life and it is very common. This also might give a sense of identity as it represents Hispanic culture. <span />
Answer: Acabo de terminar el examen.
Explanation:
First option, "se". (won't let me post due to insufficient amount of characters)