The four major functions of hormones are _

the correct answers are -

a) homeostasis

b) immunity

c) reproduction

d) growth and development

reason -

the endocrine system (produces and secretes hormones) is a vital system as it regulates the homeostasis by regulating the cell activity in the body. the endocrine system releases relevant hormones during specific time period in the blood which are then   transported across the blood , this not only maintains the chemical physical balance in our body but also regulate the vital functions of body such as growth, reproduction, and immunity