Question

Lines of latitude, also called parallels,

a. run in an east and west direction and measure distance north and south of the equator.
b. run in an east and west direction and measure distance north and south of the prime meridian.
c. run in a north and south direction and measure distance east and west of the equator.
d. run in a north and south direction and measure distance east and west of the prime meridian.

Answer 1

Lines of latitude, also called parallels, "a. run in an east and west direction and measure distance north and south of the equator". The other types of lines are referred to as "longitude"