Location is an important theme in geography because A. it is not possible to find the exact location of places on the earth
B. all places on earth can be located only in a relative way
C. all places on the earth can be located only by using a network of lines
D. all places on the earth can be located in either absolute or relative terms

D

Explanation:

It makes the most sense to me

if he does not use open the compass the a width greater than half of po, he will not be able to find the midpoint of the line, without the midpoint of the line, he will not be able to bisect the line.   to find the midpoint of a line the circles drawn with a compass must either intersect or be touching.