Answer:
B
Explanation:
POr como esta planteada la pregunta
1. Raquel pudiera estudiar en la biblioteca
Cuba, dominican republic and puerto rico
Mi hermana está en los Estados Unidos durante dos años.
Estar is used for situations that are temporary or subject to change. Ser is used in situations that are permanent or unlikely to change.
Also, I recommend paying attention to the difference between "anos" and "años". A<span>ños means "years", but a</span>nos means "anus". Just be careful!