Pretend your favorite book or comic book character came to life. Write a story about what would happen

I would go for Harry Potter

Explanation:

It would be 2020 and I think that Harry would be potion master like Snape and he created a potion to cure Coronavirus for everyone and the whole world would be saved but Harry went in disguise for this as Dr. Jason Garrison and was able to save the world and then plot Dr. Jason's own death and the world would go back to normal as himself and Coronavirus would be gone for good. And he would sell it under the name Pots and Bells Medical Care, in Diagon Alley to wizards making medical potions for a living, and then later on he becomes the potion's teacher at Hogwarts.

and your question what topic are you in trouble with?

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.