Question

which of the following systems would produce a hormone that causes bones to grow?
choose one option
a integumentary system
b nervous system
c endocrine system
d lymphatic system

Explanation:

The endocrine system produces hormones (e.g., growth hormone from the pituitary gland) that regulate bone growth. Other systems listed do not primarily secrete growth-related hormones: the integumentary system is skin/hair/nails, the nervous system uses neurotransmitters, and the lymphatic system manages immunity.

Answer:

C. endocrine system