The center of a great circle is also the center of a small circle congruent circle hemisphere sphere

The answer is SPHERE. The center of the sphere should also be the center of the great circle. If this is not the case, wherein let's say the center of the sphere is not the center of the circle, then this would refer to a small circle. What goes through the center of the sphere is known as the great circle.

Answerbecause of improved transportation, communication, and other advantages;