Are you alive?

Question

Hi, I need to know some spanish sentences for a school project.
First: "Are you alive'"

Answer 1

"Estás vivo/a"'

Answer 2

"Estáis vivos/as"'

Answer 3

wich one should I take'

Answer 4

First it is singular (tú) and second plural (vosotros)
Estás vivo (tú)?
Estáis vivos (vosotros)?
I thought that you knew, sorry
In Spanish we don't say the subjects, only if we want to be emphatics.

Answer 5

Sabina the spammer, who left a post on this thread, has just left the building.

Answer 6

Dunia said:

First it is singular (tú) and second plural (vosotros)Estás vivo (tú)'Estáis vivos (vosotros)'I thought that you knew, sorryIn Spanish we don't say the subjects, only if we want to be emphatics.

Both of these are in the "familiar" form. Polite form:

¿Está vivo? or ¿Está viva? (singular)
¿Están vivos? or ¿Están vivas? (plural)