Question

multiple choice question which of the following systems uses hormones as a primary means of communication? nervous cardiovascular reproductive endocrine

Explanation:

The endocrine system uses hormones as its primary means of communication. Hormones are chemical messengers secreted by endocrine glands into the bloodstream to regulate various bodily functions. The nervous system uses electrical and chemical signals (neurotransmitters), the cardiovascular system is mainly for blood - circulation, and while the reproductive system is influenced by hormones, its primary function is not hormonal communication like the endocrine system.

Answer:

D. Endocrine