The endocrine system consists of which of the following?
a. the skin
b. brain and the spinal cord
c. hormone-secreting glands
d. lymph nodes

The correct Answer is C

Explanation:

The Endocrine system is the second regulating system of the body. The Endocrine system uses chemical carriers such as Hormones that are delivered into the blood.

And these hormones control various significant processes such as:

So, here we can see the Endocrine system plays a vital role in our human body.

answer; more than 80% percent of adults;

obviously, the latter.