Respuesta :
The correct answers are:
A. The southwest was covered with sand dunes. This period increased aridity in the southwest of the USA .
D. Much of the northern United States was ice covered. During the last glacial period, the north of USA was covered by ice, in especial during the Last Glacial Maximum (LGM) .
These answers are not correct:
B. Canada was covered with ice thousands of feet thick. During this period, Canada was almost completely covered in ice (97%); however, the ice was not so thick .
C. Florida received heavy rains. Florida was drier during this period.