How does radiation therapy treat malignant tumors?
A: It uses drugs that poison the tumors cells.
B: it produces more signal molecules than needed
C: It forced doctors to remove tumors with surgery
D: it kills tumor cells by breaking them apart.

Radiation therapy does kill the malignant cells or slowdowns the growth of the cells by breaking or damaging the cell. It includes damaging the DNA of the cell.

The damaged cells with such DNA can not replicate. Dead malignant cells can be removed by the body after killing them.

Thus, the correct answer is option - D.

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How does radiation therapy treat malignant tumors? A: It uses drugs that poison the tumors cells. B: it produces more signal molecules than needed C: It forced doctors to remove tumors with surgery D: it kills tumor cells by breaking them apart.

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How does radiation therapy treat malignant tumors?
A: It uses drugs that poison the tumors cells.
B: it produces more signal molecules than needed
C: It forced doctors to remove tumors with surgery
D: it kills tumor cells by breaking them apart.