Answer:
José Luis lanzó el balón a nosotros. Nos lo lanzó.
Explanation:
José Luis lanzó el balón a nosotros. Nos lo lanzó. This means something like: José Luis threw us the ball. He threw it at us. In the phrase "Nos lo lanzó", the "nos" means the person is talking about himself and someone else. It's plural and first person. Of all the options it's the only one that it's correct and applies to the meaning of the first sentence.
