Answer:
The correct answer is option c. electron
Step-by-step explanation:
Hello!
Let's solve this!
Protons are positive particles located in the nucleus of the atom.
Neutrons have a neutral charge, also located in the nucleus.
The quark is part of elementary particles.
Electrons are the negative charges that circulate around the nucleus, so they are outside.
We conclude that the correct answer is option c. electron