Aline graph
a is useful for comparing quantities.
b. is useful for showing changes over a period of time.
c. is useful for showing how a "whole" is divided into "parts".
d. compares quantity using an imgage to indicate quantity.
select the best answer from the choices provided

B. Is useful for showing changes over a period of time.

c 3 branches because idk why they had 3 well when:

you think of it there are still contrys with 3

the award is named for an american naval historian and theorist, rear admiral alfred thayer mahan, united states navy who, through his writing, provided stimulus and guidance to those who share in the defense of the nation.