Answer:
The answer is actually C
Explanation:
An atom consists essentially of three types of particles:
- Protons: these are contained in the nucleus, and they are positively charged
- Neutrons: this are also contained in the nucleus, but they have no electric charge
- Electrons: they orbit around the nucleus, and they have negative charge
Based on this diagram, we see that the particle labeled by C is a proton, since it is in the nucleus and it is positively charged. The particle labeled by B is a neutron, while the particle labeled by A is an electron.
