Answer:
A: sabes
B: se
C: saben
D: sabemos
E: Sabe
Explanation:
sabes is when its you're talking about another person "you"
Se is when you're talking about yourself
Saben is when youre talking about 2 or more people
Sabemos is when you're talking about you and another person
Sabe is when you're talking about another person "she"