Which human organ system produces hormones to regulate growth, development and reproduction? a. circulatoryb. digestivec. nervousd. endocrine

D. Endocrine. It produces and secretes hormones, which regulate cells and organs.

The organ system that produces hormones to regulate growth development and reproduction is endocrine system.Example that can be said is thyroid gland,adrenal gland,pancreas etc..

we would need to see the picture to answer it