What does antiangiogenesis refer to?

Antiangiogenesis refers to the process of disrupting the formation of new blood vessels, particularly in the context of cancer treatment. The correct answer highlights that this treatment approach aims to cut off the blood supply to tumors, effectively starving them of the necessary nutrients and oxygen required for their growth. Tumors often require a robust blood supply to expand, and by inhibiting angiogenesis—the creation of new blood vessels—treatment can slow down or even shrink the tumor. This therapeutic strategy can help in managing cancer by targeting the tumor's ability to sustain itself, leading to more effective treatment outcomes.

Other options relate to either encouraging blood supply or enhancing blood vessel formation, which are contrary to the principles of antiangiogenesis. The focus is specifically on disrupting blood supply, making this answer the most suitable in the context of this medical intervention.