The correct answer is D. Hormones.
Hormones are chemical messengers that are produced by glands in the body and transported in the bloodstream to target cells. They regulate many important bodily functions, including growth, metabolism, reproduction, and mood.
Blood is a fluid that circulates throughout the body, carrying oxygen and nutrients to the cells and removing waste products. It is made up of plasma, red blood cells, white blood cells, and platelets.
Lymph is a clear fluid that circulates throughout the body, carrying white blood cells to fight infection. It is produced when plasma filters out of the blood capillaries and into the tissues.
Enzymes are proteins that speed up chemical reactions in the body. They are essential for life, as they allow the body to break down food, build new cells, and fight off infection.
In conclusion, hormones are the correct answer to the question “Chemical co-ordination in the body is brought out by” because they are chemical messengers that regulate many important bodily functions.