Ahookworm is an intestinal worm that attaches to the lining of the intestine of its host and sucks body fluids. what term best describes the symbiotic relationship between the hookworm and its host?
a) mutualism.
b) commensalism.
c) parasitism.

c) Parasitism.

Explanation:

Parasitism refers to the ecological interaction between members of two species wherein one organism (the parasite) derives benefit while the other (the host) is harmed.

In the given example, the parasite hookworm derives its nutrition from the body fluid of its host. The hookworm is getting its nutrition while the host cells are deprived of the body fluid. So, hookworm and its host represent the parasitism.

i think a) betsy can donate only blood to mark is correct because, mark and betsy have the same blood type. whereas nobody else has b+ blood so betsy can't donate to them.