The three correct adaptations that early humans made during the last ice age to survive varied environments are:
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Made stone tools such as hand axes - These tools were crucial for hunting, processing food, and crafting other tools.
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Used fire for heat, protection, and cooking - Fire was essential for warmth in cold environments, protection from predators, and cooking food, which made it easier to eat and digest.
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Worked in larger networks of communities - Collaboration within larger groups helped early humans to hunt more effectively and share resources, which was important for survival.
The other options, such as creating religions, planting crops, and taming large animals, are more representative of later developments in human history rather than adaptations specifically during the last ice age.