The setting throughout the narrative is:
a. on a ship
b. in an airplane
c. in an automobile
(this question is of the autobiography of Admiral Byrd)

there is no sentence to look at.

the answer is a.

~

hope this !

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.