Final answer:
Gamma rays, having the highest energy among electromagnetic waves, consequently have the highest frequency and the shortest wavelength.
Step-by-step explanation:
Given that gamma rays are at the far left of the electromagnetic spectrum and have the highest energy of all electromagnetic waves, we can deduce certain characteristics about them. The relationship between energy, frequency, and wavelength for electromagnetic waves is such that higher energy corresponds to higher frequency and shorter wavelength. Therefore, the correct statement about gamma rays, which have the highest energy, is that they have the highest frequency and the shortest wavelength.