Answer the following question given this paragraph: 

Platelets are cell fragments involved in blood clotting. They stick to tears in blood vessels and to each other, forming a plug at the site of injury. They also release chemicals that are needed for clotting to occur.


Q: What is the term for the cell fragments involved in blood clotting, which stick to tears in blood vessels and to each other?

 Choices:

- molecules

- droplets

- cells

- platelets

A:
platelets
