6 The Earth completes one revolution every
A. day
B. week
C. month
D. year
Please select the best answer from the choices provided

Aray has one endpoint and extends indefinitely in one directions.

Each meridian forms half of a great circle, assuming a spherical earth. meridians intersect lines of latitude (parallels) at right angles. the spherical earth is divided into  360 degrees   east-west. lines of longitude range from 0° to  180° to the east and from 0° to -180 ° to the west of the prime meridian.