Answer:
C.planted crops to have an available supply of food
D.made stone tools such as hand axes
F.used fire for heat, protection, and cooking
Step-by-step explanation:
The last ice age ended around 11,700 years ago, it lasted for over 90,000 years, over this years early humans had to learn new techniques to survive, among those techniques we can find the utilization of fire, which was already something they did, but continued to use for heat and protection, the use and creation of stone tools like hand axes, and the plantation of crops to assure supply of food, this helped early humans survive the last age of ice.