90% of brain growth is achieved by the -
Ans. is 'a' i.e., 2nd year o The brain enlarges rapidly during the latter months of fetal life and early months of postnatal life. o At bih, the head size is about 65 to 70 percent of the expected head size in adults. o It reaches 90 percent of the adult head size by the age of 2 years.
2nd year
3rd year
5th year
15th year