The most feared property of malignant tumors are:A Metastasis B Contact inhibition C Apoptosis D Controlled division

The most feared property of malignant tumors is metastasis.

The most feared property of malignant tumors is A. Metastasis.

Here's why:

A. Metastasis: This is the process by which cancer cells spread from the place where they first formed to another part of the body. In a process called metastasis, the cancer cells break away from the original (primary) tumor, travel through the blood or lymph system, and form a new tumor in other organs or tissues of the body. The new, metastatic tumor is the same type of cancer as the primary tumor. For example, if breast cancer spreads to the lung, the cancer cells in the lung are breast cancer cells, not lung cancer cells. This is the most feared property because it means the cancer is spreading and becoming more difficult to treat.

B. Contact Inhibition: This is a process of naturally occurring cell division that is prevalent in normal cells but not in cancer cells. Normal cells stop dividing when they come into contact with each other, but cancer cells do not have this property. While this is a characteristic of cancer cells, it is not the most feared property.

C. Apoptosis: This is the process of programmed cell death. Normal cells will die off after a certain number of divisions, but cancer cells avoid this process. Again, while this is a characteristic of cancer cells, it is not the most feared property.

D. Controlled Division: Normal cells divide in a controlled manner as needed by the body. Cancer cells, however, divide uncontrollably. This uncontrolled division is a defining characteristic of cancer, but it is not the most feared property. The most feared property is metastasis, where the cancer spreads to other parts of the body.