Question

PLEASE HELP ASAP 

Humans have what type of circulatory system?

A. Single Loop

B. Triple Loop

C. Double Loop

D. Quadruple Loop

Answer 1

All humans have C Double Loop Circulatory Systems.

Answer 2

well its a "closed" circulatory system, although this isn't the answer you wanted its a lil something for ya

your answer would be c. double loop.

let me know if this helps!