Question

A child's brain is roughly 90% of its adult size by what age?

O
a.) 3 years old
O b.) 2 years old
O c.) 10 years old
d.) 6 years old

Answer 1

A child's brain is roughly 90% of its adult size by 6 years old.

Step-by-step explanation:

The child's brain is roughly 90% of its adult size by 6 years old.

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