Which one of these is characteristic of cancer cells?
a. they undergo apoptosis.
b. they exhibit metastasis.
c. they respond to growth inhibitors.

The correct answer for this question is C - one characteristic of cancer cells is that they respond to growth inhibitors. Growth inhibitors are one type of treatment drug use for cancer, which attempts to stop the cancer in its tracks by stopping cancer cells from communicating with each other and therefore stops the cancer from getting bigger as a result.