ANSWER:
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.