1. earthquake
2.Alberto heard the music of the party and left home.
Alberto heard the music of the party when he left home
3.B: <span>se cayo
4: c </span><span>puso</span>
Hey!
While both are often used, the most accurate answer is probably answer a:
The "personal a" is necessary.
Why?
Well, when we say: "Quiero a mi esposo Jorge" we are talking specifically about the husband, that is: "lo quiero a él". Therefore, the "a" is usually used on these occasions.