The room exploded in laughter, feeling Sanjay with a sense of pride. He was responsible for those laughs. It was a gift. I guess he had had since childhood. As a young child, Sanjay had recognized his unique ability to brighten the room with his humor: as he got older, he honed his ability to sense when his peers needed a bit of healing laughter. It was a game to him; how many smiles can I produce today?

Which best describes the use of syntax in this passage?

The author uses varied sentence structures. The author includes parallel sentence structures.
The author uses mostly short and choppy sentences.
The author primarily uses compound sentence.