Answer: a. Protons and c. Electrons
Explanation:
Protons can emit electromagnetic radiation when they change energy levels in an atom or when they move through a medium at high speeds.
Electrons, especially when accelerated or moving through a medium, can emit electromagnetic waves such as light, radio waves, and others depending on their energy levels and interactions.
Neutrons, however, don't have an electric charge and therefore don't emit electromagnetic radiation.
