Which statement describes a characteristic common to autoimmune diseases? A. They commonly affect women.
B. They are easily passed by bacteria from one person to another.
C. It is rare to have more than one at a time.
D. They most commonly harm the endocrine system.

D.

immune diseases are where your immune system attacks itself. most commonly it attacks the brain or the endocrine system first, as a way to take complete control.

Explanation:

A. males have a higher risk of getting an autoimmune disease.

B. autoimmune diseases are not passed, they are not contagious, it something you are born with or develop over time with a problem in cells. they can be triggered by food, medicine, anything really.

C. it is not rare to have more than one, many people who have one end up developing more over time.

the most common energy conversion is from kinetic energy to potential energy, and then from potential energy to kinetic energy.

later on comes the heat energy, mechanical energy, and other energy conversions.

this energy conversion is so common that we can find it in our day to day lives as well.

- one of the most common energy conversions involves the changing of potential energy to kinetic energy or kinetic energy to potential energy