Question

¿Cómo está ella?

Es contenta.

Está preocupado.

Es gorda.

Está aburrida.

Answer 1

The last one,

Está aburrida.

Step-by-step explanation:

Your asking the person (that knows the girl), if she's fine

Answer 2

The last one,
Está aburrida.
Since you are talking about a female and the conjugated version of estar is right.