A proton ___________:

• A. Has one positive charge.
• B. Has one AMU.
• C. Is found in the nucleus of the atom.
• D. Only a and b are true.
• E. a, b, and c are true.

Answer: (E)

Verified step by step guidance

1. Understand the basic properties of a proton: A proton is a subatomic particle found in the nucleus of an atom. It carries a positive electric charge.
2. Recognize that the charge of a proton is +1, which is often referred to as one positive charge.
3. Recall that the mass of a proton is approximately 1 atomic mass unit (AMU), which is a standard unit of mass used to express atomic and molecular weights.
4. Identify that protons, along with neutrons, are located in the nucleus of an atom, which is the central part of the atom.
5. Combine the information: Since a proton has one positive charge, has a mass of one AMU, and is found in the nucleus, all statements a, b, and c are true.