An organ system consists of an organ system consists of a. a group of coordinated tissues. b. blood, lymph, and other body fluids. c. organs that collectively perform a vital body function. d. a collection of similar cells.

Option C

Explanation: An organ system refers to several organs that is made up of similar tissues, that each performs a similar or related function.

For Example: The digestive system consists of the small intestine, pancreas, large intestine, salivary gland, oesophagus, liver etc.

All these organs listed above each consists of tissues that help in the ingestion and absorption of nutrients in the body.