Brachytherapy means –

Correct option is B

Sol. Brachytherapy is a type of internal radiation where radioactive material is placed near or inside the tumor. Explanation of each option: ● (a) Chemotherapy – Involves drugs that kill cancer cells; not radiation-based. ● (b) Internal Radiation Therapy – Correct answer. Brachy means "short distance" radiation inside body. ● (c) External Radiation Therapy – Radiation from outside the body, called teletherapy. ● (d) Radiation with surgery – May occur as treatment combination, but not brachytherapy itself.