Though it experiences freezing temperatures, much of Antarctica is considered a desert because it shares a key quality in common with other deserts: like all deserts, it has __________.

A.
flora and fauna in common with the Sahara
B.
extreme temperatures that make settlement difficult
C.
large ice caps and ice sheets
D.
an average of less than 10 inches of precipitation per year

D. an average of less than 10 inches of precipitation per year