The number of protons in this atom of oxygen is 8. Thus, the correct option is A.
What are Protons?
Protons may be defined as stable subatomic particles present in the nucleus of every atom. It is positively charged in nature.
The number of protons of an atom is equal to its atomic number. Oxygen has an atomic number of 8, which means the number of protons is equal to 8 as well.
Therefore, it is well described above.
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