Final answer:
The structures in the cell work together to carry out the life functions of a unicellular organism. Unlike multicellular organisms that have specialized cells performing specific functions, unicellular organisms are able to carry out all the processes of life without help from other cells.
Step-by-step explanation:
The life functions of a unicellular organism are carried out through the structures in the cell working together.
Option B is the correct statement.
Unlike multicellular organisms that have specialized cells performing specific functions, unicellular organisms are able to carry out all the processes of life without help from other cells.