Final answer:
The statement that all parallels of latitude are Great Circles is false. Only the equator, which is a great circle, divides Earth into two hemispheres. Other parallels of latitude diminish in size towards the poles and are not considered great circles.
Step-by-step explanation:
The statement that all parallels of latitude are Great Circles is False. A great circle is any circle on the surface of a sphere whose center is at the center of the sphere. Earth's equator is an example of a great circle. However, other parallels of latitude are not great circles because they do not all have the same center as the sphere.
Only the equator, which is at 0 degrees latitude and divides the earth into the Northern and Southern Hemispheres, is considered a great circle. As you move towards the poles, parallels of latitude decrease in size, shrinking to a point at the poles themselves at 90° north and 90° south latitude.