Discover how IDNLearn.com can help you find the answers you need quickly and easily. Our platform provides trustworthy answers to help you make informed decisions quickly and easily.

What is the longest distance between two points on the Earth's surface, also known as the great-circle distance?
a. The equatorial circumference
b. The diameter of the Earth
c. The distance between two antipodal points
d. The distance between two points on the same meridian