Question

By the time a children turn two years old, their brains have grown to about ___ percent of their adult size.

Answer 1

By the time a children turn two years old, their brains have grown to about '80 percent' of their 'adult size'.

Step-by-step explanation:

• There is variation of growth while comparing in growth of body and the growth of brain. Basically, the process of brain growth is much faster.

• By the age of five, a child’s brain grows is complete 100 percent.

• There had been a survey about what time must be the accurate time for the proper development of brain as well as body is up to 3 years old.