The fda protects the us public from

a.
drugs smuggled across the border
b.
harmful prescription and otc medications
c.
paying too much for medicine
d.
medications that can form addictions

The answer is B.  harmful prescription and OTC medications

Explanation:

The FDA is a government agency of the United States government which is in charge of regulating food (people or animals), medicines (human and animal), cosmetics, medical devices (both human and animal), etc. Its main functions are to protect public health, to help public health through innovations in products, in addition to supplying enough information, on a scientific basis, so that the public can use medicines and food for the improvement of your health.