Which of the following statements would be appropriate in a formal essay?

Select all that apply

Bait and tackle are necessary tools for a fishing trip.
You shouldn't use lighter fluid to start a campfire.
In Act III, Scene 4 of Shakespeare’s Hamlet, Polonius was stabbed by the Prince of Denmark.
Air bags deploy when a vehicle impacts another object.
The United States is a democratic republic.

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.

bah and ahbahaahbahabahaha

sentence lenght varies according to word choice.you select which word to use and that will require to use other expressions that collocate with the word chosen.sentence length will vary   according to the choice of words you make to express your ideas.  

the answer would be c : illustrate that this type of suffering is unimaginable. just took the test