Water vapor condenses into a glass of water. The water is then placed in a freezer and changes into ice. What remains
consistent as the water changes states?

The problem here is that according to aufbau principle before 3d orbital 4s subshell comes.after filling 3p orbital with electrons you have 4 electrons left, you place two in 4s with opposite spin and the other two in 3d in any of its two orbitals of total five orbitals with the same spin.

The answer to this question is a

It will be b hydrogen