The three correct adaptations that early humans made during the last ice age in order to survive varied environments are:
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Made stone tools such as hand axes - Tool-making was crucial for hunting, processing food, and creating shelters.
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Used fire for heat, protection, and cooking - Fire provided warmth in cold climates, protection from predators, and allowed for cooking food, which made it easier to digest and safer to eat.
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Worked in larger networks of communities - Collaboration and social networks were important for survival, allowing for shared resources, knowledge, and protection.
The other options (creating religions, planting crops, taming large animals) either did not occur until later periods or were not significant adaptations during the ice age.