Question

an organism is a _______.
o group of organs that carry out a similar function
o complete individual
o structure composed of the same cell type
o group of two or more atoms

Explanation:

An organism is a living entity that is a complete individual, capable of independent life - processes such as growth, reproduction, and response to stimuli. A group of organs with similar function is an organ - system, a structure of the same cell type is a tissue, and a group of two or more atoms is a molecule.

Answer:

complete individual