Question

Help please! (Easy question) I think it's D

Answer 1

It would definitely be at 90%

Answer 2

I am pretty sure it’s D. 90%


“A newborn's brain is about a quarter of the size of the average adult brain. Incredibly, it doubles in size in the first year and keeps growing to about 80 percent of adult size by age three and 90 percent — nearly full grown — by age five.”