Question

a blood clot stimulating even more blood clotting is an example of
a there is no feedback involved
b negative feedback
c positive feedback
d metabolism
e mid - feedback
f neutral feedback

Explanation:

Positive feedback occurs when the output of a process intensifies the process. In blood - clotting, a blood clot stimulates more blood clotting, which is an example of positive feedback. Negative feedback works to counter - act and stabilize a process. Metabolism refers to all chemical reactions in the body. There are no such terms as mid - feedback or neutral feedback in this context.

Answer:

C. positive feedback