Sandra believes that alien beings on unidentified flying objects (UFO’s) are beaming thoughts into her head. She is suffering from

A) an obsession
B) a hallucination
C) a delusion
D) a compulsion

C) a delusion

Explanation:

Anyone you would talk to would say that this is not possible while Sandra believes it true so therefore it is a delusion.

the sun's light combined with the visible wavelenghts form what is called ultraviolet radiation, which are the long waves at the end of a visible light sprectrum.

hope it ,

bioteacher101