What treatment typically involves intravenous medication to fight cancer?

• A. Radiation therapy
• B. Chemotherapy
• C. Immunotherapy
• D. Surgery

Answer: (B)

Chemotherapy uses intravenous medications that travel through the bloodstream to reach cancer cells throughout the body. These cytotoxic drugs interrupt cell division and growth, aiming to kill rapidly dividing cancer cells. Because they circulate systemically, they’re used for cancers that may involve multiple sites or have spread beyond the original area.

This differs from radiation therapy, which delivers focused energy to a specific tumor site, and from surgery, which physically removes a tumor. Immunotherapy can also be given by IV, but it works by boosting or guiding the immune system rather than directly delivering drugs to kill cells.