The correct answer is: C. One degree of longitude has the same value everywhere.
A degree of longitude is a measure of distance along the Earth’s surface, east or west of the Prime Meridian. The Prime Meridian is an imaginary line that runs from the North Pole to the South Pole and passes through Greenwich, England. All other longitude lines are measured east or west of the Prime Meridian.
One degree of longitude is equal to 1/360th of the Earth’s circumference. This means that if you were to stand at the North Pole and walk due east for one degree of longitude, you would travel 69.1 miles (111.3 kilometers).
The value of one degree of longitude does not change from the equator to the poles. This is because the Earth is a sphere, and all lines of longitude are equally spaced around the globe.
Option A is incorrect because one degree of longitude has the same value everywhere.
Option B is incorrect because one degree of longitude has the greatest value at the equator.
Option D is incorrect because one degree of latitude decreases from the equator to the poles.