Answer:
Correct, varying hours of sunlight. Winter days are shorter, summer days are longer, or show more sunlight.
Explanation:
Latitudes don`t change
It can`t "cause day and night"
I only photographed my textbook but this page gives a lot of information about your question
Definition, Location, Example
The Corn Belt,is an area in the midwestern United States, roughly covering western Indiana, Illinois, Iowa, Missouri, eastern Nebraska, and eastern Kansas, in which corn and soybeans are the dominant crops ("Corn Belt Region").