Apoptosis is the distinguishing property of

The correct option is A Living things

Apoptosis is a form of programmed cell death, or "cellular suicide". Apoptosis is an orderly process in which the cell's contents are packaged into small packets of membrane for 'garbage collection' by immune cells. It occurs only in multicellular organisms. Biochemical events lead to characteristic cell changes and death. It often occurs for the greater good of the whole organism, such as when the cell's DNA has become damaged and it may become cancerous. It can only occur in living things as life and death is a characteristic property of living things.

So, the answer is A.