Which explanation is most likely an effect of the evolution of a larger brain in humans? A larger brain allowed humans to use tools. A larger brain allowed humans to solve complex problems. A larger brain allowed humans to better survive disease. A larger brain increased humans' ability to fight.

A larger brain allowed humans to solve complex problems.

Explanation:

The correct answer is the option: A larger brain allowed humans to solve complex problems.

Explanation:

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Evolution shows that characteristics have developed over time that have allowed living things to survive in the environment.

In this case, it involves the size of the brain. The brain grew so that the human being could solve more complex problems.

We conclude that the correct answer is the option: A larger brain allowed humans to solve complex problems.

Explanation:

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