Answer:
B. The formation of cancer cells.
Step-by-step explanation:
DNA mutation causes overproduction of protein which lead to the formation of cancer cells. Mutations in genes is responsible for causing cancer by speed up the rate of cell division or inhibits the normal controls on the system, such as cell cycle or programmed cell death. As a growth of cancerous cells occurs, it can change into a tumor. Cancer is unchecked growth of the cell due to fast cell division so we can conclude that DNA mutation leads to cancer disease.