What technology does an x-ray use to see below the surface of a work of art?
a. laser technology
b. electromagnetic radiation
c. color spectrums
d. computer software

B. Electromagnetic radiation

Explanation:

Electromagnetic radiation comprises of electric and magnetic field which vary at the same time.

X-ray is an example of an electromagnetic radiation. It consists of extremely short wavelength ranging from about 10−8 to 10−12 metre and high frequency, ranging from about 1016 to 1020 hertz (Hz).

X-ray uses the electromagnetic radiation technique to see below the surface of a work of art.