The correct option is C 90°N
The marking of latitudes is a fairly simple process. It involves using a protractor that is aligned perfectly along the Equator to draw lines for each degree.
The North Pole is located at an angle of 90°. Here, it is integral to denote which hemisphere the latitude is located in, given that there will be two occurrences of the same degree–one in either half. The 90°N latitude, thus, denotes the North Pole.