During the Adolescent Growth Spurt,internal and External Changes Occur Differently

Multiple Choice

During the adolescent growth spurt,internal and external changes occur differently for boys and girls (sexual dimorphism) .What aspect of the growth spurt typically applies to girls more than boys?

A) Size of heart and lungs increases more in one gender
B) On average,one gender gains about 42 pounds
C) Begins 2 years earlier in one gender
D) Broader shoulders and thicker bones in one gender