Consider the new definition of life. if you were to argue that a virus or a single mitochondria were, in fact, alive based on this definition, you would be ignoring the main tenet of
a. cell theory.
b. endosymbiosis.
c. nucleosynthesis.
d. natural selection.

a.cell theory.

Explanation:

The new definition of life states that, life is a condition given to those who were born and who have not yet died. According to this definition, if we claim that a virus or a mitochondria is, in fact, alive, we would be violating the concepts of cell theory.

This is because cell theory states that cells are the basic and mandatory unit of all living beings. A virus and a mitochondria have no cells, however they are born and can die. For this reason, if we adopted the definition of life, we would end up breaking the rules of cell theory.