The answer is B)
Voy al centro comercial con mi prima.
Vivir is the verb meaning "to live."
a through c are different tenses of vivi. To live is not a command nor is there a formal/informal way to say it.
vivimos - We live
viven : They live
vive : She lives
I pretty sure that on the second hay it is supposed to be there is not there are because the door is singular not plural
2
Nos
La
Se
La
3 te
Los
4 me
Las
5 el
Ya