Which of the following is the name given to protons electrons and neutrons?

The term "atom" comes from the Greek word for indivisible, because it was once thought that atoms were the smallest things in the universe and could not be divided. We now know that atoms are made up of three particles: protons, neutrons and electrons — which are composed of even smaller particles, such as quarks

The answer is a) carbon-12

Bthats what im doing to and i figured it out it is b