Respuesta :
Neutrons and protons in an atom are acted upon by the strong force.
what is strong force?
Strong force or strong nuclear force, a fundamental interaction of nature that acts between subatomic particles of matter. The strong force binds quarks together in clusters to make more-familiar subatomic particles such as protons and electrons.
what are quarks?
Quarks are fundamental building blocks of matter. They are most commonly found inside protons and neutrons.
- The strong interaction that keeps protons together is a different kind of force (the strong nuclear force) which does not affect electrons.
So being only option in which electrons are not present , option D is the correct answer.
Learn more about strong force here- https://brainly.in/question/6906618
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