In the electron cloud model, the electron cloud is denser in some locations than in others. what do the denser areas represent?
a. regions where the probability of finding an electron is high
b. orbitals that contain the greatest number of electrons
c. energy levels that are the least stable
d. electrons that have the highest energy

Electron cloud model was the great contribution of 20th centuary
In the electron cloud model, the electron cloud is denser in some locations than in others the denser areas represent that the
regions where the probability of finding an electron is high 
means there is more chance of finding or presence of an electron
so correct option is A
 hope it helps

The correct answer would be 1/10