Cholesterol, testosterone, and estrogen are

all examples of which are chemical

messengers that the body uses.

A. sugars

B. steroids

C. proteins

They are all examples of:

B. Steroids

Explanation:

- Cholesterol is the most common steroid and is the precursor to vitamin D.

- Estrogens are a group of steroid hormones that control the development and maintenance of an individual's feminine characteristics.

- Testosterone is the primary male sex hormone and anabolic steroid.