Why do you think it is important to protect lions in Africa? Think about what you read in both articles and the sidebar.

Lions play a key role in the food chain by helping to control the herbivore population. ... The lions have a reputation of being the 'chief' predator of their habitat as they are known to even kill large herbivores such as elephants and giraffes. Disease Control. Lions prey mainly on herd animals

Explanation:

answer: b (host)

viruses use the cells of living organisms to reproduce. the cell which is used by virus is called as "host cell". it is a living cell in which virus multiplies, example bacteria, plant or an animal cell.

in this, the virus is a parasite, which uses host cell for its benefit (reproduction) by using the cell machinary of host cell.