Which of the following parts of the electromagnetic spectrum has the lowest energy?

A. Microwaves

B. Visible light

C. X-rays

D. Ultraviolet light

A. microwaves have the lowest energy in the electromagnetic wave spectrum.

B. visible light is higher energy than microwaves.

C. X-rays are high energy second only to gamma rays in intensity.

D. UV is the next highest energy band after the viable light spectrum. they have less energy than x-rays

so the answer is A.