Question

atoms of every element are composed of smaller particles called
_______, _____, and _______.
a neutrons, protons, and electrons
b none of these
c neutrons, protons, and electrodes
d neurons, protons, and electrodes

Explanation:

Atoms are made up of protons (positively charged), neutrons (neutral), and electrons (negatively charged). Option C and D have "electrodes" which are related to electrical devices, not atomic structure. Option D also has "neurons" which are nerve cells in biology. Option A has the correct sub - atomic particles.

Answer:

A. neutrons, protons, and electrons