How does cancer spread in the human body?

Correct option is D

Cancer spreads in the human body primarily through the lymphatic system and bloodstream, a process known as metastasis. Cancer cells break away from the primary tumor, travel through the lymph nodes or blood vessels, and form secondary tumors in other organs.
Explanation of Options:
· (a) Through the skin: Incorrect; cancer does not spread through skin contact.
· (b) Through the lymphatic system: One of the main pathways of cancer spread.
· (c) Through the blood: Another major route for cancer metastasis.
· (d) Both (b) and (c): Correct answer; cancer spreads via both the lymphatic system and the bloodstream.