How many protons does oxygen (O) have?

a) 2

b) 4

c) 8

d) 16

e) 32

8.

Explanation:

Oxygen is one of the most important element present in the environment as well as inside the living organism. The atomic number of the oxygen is eight.

The proton number of an element is equal to the atomic number of that element. The number of proton of an oxygen atom is eight. The number of electron can be lose or gain in the chemical reaction.

Thus, the correct answer is option (c).