Protons are made up of up quark(s) and down quark(s).
a. 1, 1
b. 1, 2
c. 2, 1
d. 2, 2

The correct answer is C. 2, 1

Explanation:

In physics, protons along with neutrons and electrons are the particles that compose atoms which are the basic unit of matter. Protons different neutron have a positive charge and along with neutrons create the nucleus of the atoms. In terms of composition, protons are made up of three quarks (elementary particles) that are divided into two up quarks and one down quark that are two types of quarks with low mass. According to this, it can be concluded protons are made up fo 2 up quarks and 1 down quark.

the answer is c.)

explanation:

1/0.14nm = 10^10/1.4 a lot