Hormonal growth spurts in adolescence last about years.
a. two
b. three
c. four
d. five

The human adolescent growth spurt is the rapid and intense hormones changes that occurs during the adolescent stage of the human life cycle. The hormones play a huge role in the human body because they regulate many processes in the body, growth, puberty, metabolism and reproduction. Hormonal growth spurts in adolescence last about five years. Correct D

i think it's the first one because doctors aren't the ones who get rid of the old needles. most of them time it's not even doctors who give you shots, it's nurses.