The great circle whose plane is perpendicular to the axis of rotation of the earth, is called A. Equator B. Terrestrial equator C. 0° latitude D. All the above

The correct answer is: D. All the above

The equator is a great circle that divides the Earth into the Northern and Southern Hemispheres. It is the longest circle of latitude on Earth, at 0° latitude. The equator is also the only circle of latitude that is also a line of longitude.

The terrestrial equator is the equator of the Earth, or the line of latitude that divides the Earth into the Northern and Southern Hemispheres. It is the longest circle of latitude on Earth, at 0° latitude. The terrestrial equator is also the only circle of latitude that is also a line of longitude.

0° latitude is the line of latitude that runs around the Earth at the Equator. It is the only line of latitude that is also a great circle.