In humans, the brain reaches its adult size at about _______.

1 year

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2 year

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4 year

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6 year

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Solution

The correct option is D 6 year
The size of brain on an average is 15cm in length and 1.2kg-1.4kg in weight. The brain reaches its adult size at about 5-6 years of age. They can better coordinate and plan activity, using both the hemispheres of brain.
Thus, the correct answer is option D.

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In humans, the brain reaches its adult size at about _______.

The correct option is D 6 yearThe size of brain on an average is 15cm in length and 1.2kg-1.4kg in weight. The brain reaches its adult size at about 5-6 years of age. They can better coordinate and plan activity, using both the hemispheres of brain. Thus, the correct answer is option D.

The correct option is D 6 year
The size of brain on an average is 15cm in length and 1.2kg-1.4kg in weight. The brain reaches its adult size at about 5-6 years of age. They can better coordinate and plan activity, using both the hemispheres of brain.
Thus, the correct answer is option D.