Question

the equinoxes can best be described as: a the length of daylight at the arctic and antarctic circle is 24 hours b the suns vertical rays are striking either the tropic of cancer or the tropic of capricorn c days and nights are equal length in all parts of the world d occurring in march and december

Explanation:

Equinoxes occur when sun - earth positions result in equal day and night lengths globally.

Answer:

C. Days and nights are equal length in all parts of the world