Answer :
This is a chemical produced by cells in the body, which circulates throughout the body in the bloodstream is Hormone. It affects a wide range of functions and acts on one or more target as tissues.
So, correct answer is Option A Hormone/Tissue
The chemical messengers of the body, hormones communicate with tissues and the bloodstream. Hormones affect a variety of bodily functions, including growth and development, metabolism—the process through which your body converts food into energy—sexual function, reproduction, and mood.
Tissue is colection of huge amount of cells. Connective tissue, epithelial tissue, muscular tissue, and nerve tissue are the four fundamental forms of tissue. Other tissues are held together and supported by connective tissue (bone, blood, and lymph tissues). A coating is provided by epithelial tissue (skin, the linings of the various passages inside the body).
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