Question

As hominids evolved, they created increasingly sophisticated tools. Based on this information, which of the following is the best inference that can be made?
As their cognitive abilities increased, the size of their brains also increased.
In order to communicate how to make the tools, they must have been capable of language.
Developing tools facilitated the transition to walking upright.
Using tools enabled them to obtain food, so their weight-to-height ratio also increased.

Answer 1

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