Answer:
The correct answer will be option-cell.
Explanation:
A cell is the basic structural and functional component of the cell as it contains all the necessary pre-requites to start a life.
A cell contains the basic structures to perform the basic function-metabolism which maintains the life as well contains the structural components to make the body of an organism in the form of biomolecules like- proteins, nucleic acid and carbohydrates.
Thus, a cell is considered the basic unit of life and is the correct option.
