How do electrons differ from protons and neutrons? a. they do not move. b. they are larger. c. they are not in a fixed position. d. they are located in the nucleus.

Hi!

Electrons are particles which basically 'orbit' around the nucleus. Protons and neutrons are condensed, in a fixed position inside the nucleus. 

With this in mind, the answer will be C.

Hopefully, this helps! =)

The number of protons in a nucleus