The newborn's brain is about 25 percent of its adult weight by birth; by the second birthday, the brain is about percent of its adult weight.

50 percent. Newborn has very low listening ability and learning as brain develops the child will learn new things and his brain starts to grow big .Brain will adapt the language,color ,light,people faces and then child will learn fast

Hey manwere are we to select?

Ithink option a is correct because you cannot donate a different blood group than yours because it won't match.option a says betsy can donate to mark. they have the same blood group so donation can happen.