The subatomic particle that can absorb and emit light energy is the
a. proton.
b. neutron.
c. electron.
d. quark.

The subatomic particle that can absorb and emit light energy is the electron

The subatomic particle that can absorb light is the electron and it also has a negative electrical charge. Also here's a little Chemistry joke also.
A proton and a neutron are walking down the street. 
The proton says, "Wait, I dropped an electron help me look for it." 
The neutron says "Are you sure?"
The proton replies "I'm positive."