The puddles were frozen. Which revision makes the general description the most vivid?
A. The puddles had once been made of water, but they were now ice.
B. The frozen puddles were fingerprinted with gray and brown swirls.
C. The weather had gotten cold, which is why the puddles were
frozen
D. The water in the puddles had turned into frozen water, or ice.

Consider hydrogen in an excited state n = 5n=5 that emits photons to reach the ground state. there are various possible transitions other than straight to the ground state that can occur; for example, it can drop to the n = 3n=3 state followed by the n = 3n=3 to the ground state transition. which of the possible transitions will result in the emission of a photon in the visible region?