The Ganges Plain is . A.
an area in northern India and Bangladesh that supports agriculture
B.
a large desert in southern India
C.
a group of large lakes in northern India
D.
an area of dry, flat land that borders the coastline

C. a group of large lakes in northern India

it's not B google where it is located, it's northern india.

in an absolute  monarchy, the  monarchrules as an autocrat, with absolutepower  over the state and government — for example, the right to rule by decree, promulgate laws, and impose punishments. the  monarch isnominally sovereign but the electorate, through their legislature, exercise political sovereignty.

i would say b. research typically uses a variety of sources