Answer:
The correct answer is electrons.
Explanation:
The atoms are that of which the whole matter of the universe is composed. It is the smallest unit of matter that has chemical properties.
Within each atom there are extremely small particles, which are called subatomic particles.
Atoms have three basic parts: electrons, neutrons and protons.
Of these three, the smallest are the electrons, who are orbiting the nucleus of the atom, while the neutrons and protons are inside the nucleus.
Given this information we can say that the correct answer is elecetrons.
