I believe the answer is the first one. I'm sorry if I'm wrong
Answer:
How is your favorite person?
Explanation:
Como means how. If it was quien it would be: Who is your favorite person?
Here in U.S we sing the Happy Birthday song but in Mexico they sing las mananitas when is some ones birthday , and because they don't really know any other song that they can sing in a birthday party and the song is really popular in birthday party .
