There are three perfect squares in a standard die; 1, 2, 4. If there is two standard dies, then the probability of getting a perfect square is 1/3 x 1/3 = 1/9.
There are 4 numbers less than 5 in a standard die, making it 1/4 x 1/4=1/16.
The answer would be B, an electron because the proton is positive, neutron is neutral, and the nucleus is the center of the atom.
A - its condensation and gas particles have a higher kinetic energy