Fact 1: Cells are the basic units of the structure and function of living things.

Fact 2: An organism is a living thing.

Given the two facts above, answer the question "What are cells the basic units of the structure and function of?" with the following options: 
- humans
 - Most plants
 - animals
 - Cell service
 - Organisms
 - mammals
 - Lego cells
 - Buildings


 

     Organisms    