The collection of all component frequencies iscalled
a. frequency spectrum
b. bandwidth
c. throughput
d. none of the given

The answer is Frequency Spectrum.

Explanation:

The frequency spectrum is range of all component frequencies.It contains all the waves which are as following:-

Gamma Rays

X-Rays

Ultraviolet

Visible light.

Infrared

Micro wave

Radio wave

These all waves have their range of frequencies.The waves that are visible to us is only the visible light.

answer; the above statement is (true);