It is the last one because the other ones do not say she is going to
Vamos should be correct, because when you have anything with 'nosotros' it will end in 'imos', 'emos' or 'amos.'
Soy fuerte, gracioso, e inteligente.
The answer should be "Perla y Rubí son bonitas".
Explanation:
It should be "son" instead of "es" because there is more than one thing, and "bonitas" because it seems like both are females. (I'm answering based on what I know
of own language, I hope it helps)