Question

In a living organism, what is an organ? functional unit, or building block, of all organisms; smallest unit that can carry on the O A. activities of life O B. a structure composed of a number of tissues that work together to perform a specific task O C. a group of similar cells that perform a common function D. a structure that provides a specific service within a cell​

Answer 1

Answer: D. a structure that provides a specific service within a cell​

Explanation: