.......... Diana didn't know how to swim, she jumped into the swimming pool.

A. Despite

B. As

C. Though

D. Because of

C. Though

 - Diana didn't know how to swim, but she still jumped into the swimming pool. "Though" indicates a contrast or opposition between two things.

C. Mặc dù - Diana không biết bơi, nhưng cô ấy vẫn nhảy xuống bể bơi. "Though" chỉ sự tương phản hoặc đối lập giữa hai điều.