Which of the Following Descriptions Best Matches the Function of Platelets

Question

Which of the following descriptions best matches the function of platelets?
A) adhere to collagen beneath endothelium
B) helper cells are one type
C) produce antibodies in response to antigens
D) kill bacteria using hydrogen peroxide
E) often elevated in allergic individuals

Accepted Answer

Platelets adhere to collagen beneath the endothelium to form a blood clot and stop bleeding.

Answer: B, C, D, E are incorrect 
 Platelets do not have any helper cells or produce antibodies or kill bacteria. They can sometimes be elevated in allergic individuals, but this is not their primary function.