Question

practice it! which of the following factors is most responsible for floridas nickname, \the sunshine state\? proximity to the keys proximity to the equator long coastlines thick atmosphere

Explanation:

Proximity to the equator means more direct sunlight. Florida's location closer to the equator contributes to its sunny climate, which is why it is called "The Sunshine State". Proximity to the Keys and long coastlines don't directly relate to the amount of sunshine. A thick atmosphere would likely block sunlight rather than enhance it.

Answer:

proximity to the equator