Answer:
The correct answer is D. Organ
Explanation:
An organ is made up of two or more tissue to perform one or more specific physiological functions. Organs can be made up of four type of tissue nervous, epithelium, muscular and connective tissue.
Most of the organ contains all four tissue for example small intestine. Internal wall of small intestine is made up of epithelium tissue which is surrounded by smooth muscles and connective tissue containing neurons.
It performs different function like secretion of digestive enzymes and absorption of nutrients from digested food in the body. Muscle tissues have the function in peristalsis movement to pass the digested food further in the colon.
