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What happens in cancerous cells regarding cell growth?

  1. Cells divide in a controlled manner

  2. Cells lose the ability to control cell growth

  3. Cells stop dividing

  4. Cells undergo programmed cell death

The correct answer is: Cells divide in a controlled manner

Cancerous cells have lost the ability to control cell growth, meaning they can no longer divide in a controlled manner like healthy cells. This uncontrolled cell growth is what leads to the formation of tumors and the spread of cancer throughout the body. Option C, cells stopping dividing, is incorrect because cancer cells actually divide at a faster rate than normal cells. Option D, programmed cell death, is also incorrect because cancer cells do not undergo this process and continue to multiply. Option B, cells losing the ability to control cell growth, is almost correct but not as accurate as option A, which specifically mentions the controlled manner in which cells divide.