Puberty begins when the gland secretes hormones into the bloodstream to affect the sex organs A:thryoid
B:adrenal
C:pitulitary
D:reproductive

pituitary

Explanation: the hypothalamus makes the pituitary gland release hormones(estrogen and testosterone) into the body. Thyroid is metabolism, adrenal is Adrenalin, and the reproductive glands are the first things that change when the pituitary glands release hormones

d.. reproductive and sex kinda work together my dude

Explanation:

well when looking at this if you think about it   negativley and positivley   react with each other and when the first layer gets full they add layers it starts with 2 on the first layer and it constantly goes on until the official number is there

d is the answer hope this