which of the following describes an x - ray photon? high - speed electron heavy subatomic particle high…

Brief Explanations:

A photon is a mass - less particle that is a quantum of electromagnetic radiation. X - ray photons are a type of electromagnetic radiation and are massless packages of energy. High - speed electrons are different particles, heavy subatomic particles refer to things like protons and neutrons, and high - energy charged particles are not the description of photons which are neutral.

Answer:

Massless package of energy