A student learns that radio waves are deemed safe, whereas X-rays are considered hazardous. The student examines the provided electromagnetic spectrum.
Given this information, which statement can the student most effectively articulate to clarify the distinction between radio waves and X-rays?
a. The greater energy of X-rays is reflected in their shorter wavelength.
b. The higher temperature and increased likelihood of causing burns are associated with the shorter wavelength of X-rays.
c. The heavier particles of X-rays, indicated by their shorter wavelength, enable them to penetrate matter more extensively.
d. The X-rays with their shorter wavelength cause them to be less common.