Q: Answer the following question given this paragraph: The nucleus is a small, dense region at the center of the atom. It consists of positive protons and neutral neutrons, so it has an overall positive charge. Q: What is the small, dense region at the center of the atom that consists of positive protons and neutral neutrons? A:

Possible answers:
(A). proton
(B). electron
(C). photon
(D). nucleus
The answer is:
(D).