Answer:
C. in probable cloud locations
Step-by-step explanation:
Electrons are in clouds (orbitals) of probabilities of their position around the atom. To understand how they are distributed inside these orbitals it is necessary to define what is the “electronic configuration of an atom”.
Electronic configuration: Shows how electrons from an atom are distributed in different orbitals, in which each orbital has a certain amount of electrons that can hold.
Ernest Rutherford was the first one to proposed a model of an atom like this, with the positive charge concentrated in the center and a cloud of electrons around it.
After that, Schrödinger set the basis for the accepted view that it is getting today of the placement of electrons in an atom (Electron Cloud Model).