Final answer:
The manufacture of cells is not a part of apoptosis. So, the correct option is A.
Step-by-step explanation:
Apoptosis, also known as programmed cell death, is a natural process where cells are intentionally eliminated in order to maintain proper functioning and remove damaged or unnecessary cells from the body.
During apoptosis, several events occur, including activation of cellular enzymes, DNA fragmentation, and cell shrinkage. The activation of cellular enzymes helps break down the cellular components, while DNA fragmentation helps break down the genetic material of the cell. Lastly, cell shrinkage and membrane blebbing occur, leading to the formation of apoptotic bodies that are later engulfed and cleared by neighboring cells or phagocytes.
For example, in T-cell development, immature T-cells undergo screening to determine whether they bind to self-proteins. If they do, apoptosis is initiated to remove potentially dangerous cells. This is an important process that helps regulate the immune system and prevent autoimmune diseases.
Therefore, A is the correct option.