Why is it important to honor timelines?

Around 160,000 Allied troops, 73,000 of whom were Americans, stormed the beaches of Normandy in a carefully coordinated attack. Before the invasion was over, an estimated 4,500 troops had lost their lives. Another 5,500 were listed as wounded or missing. German casualties topped 9,000.

Explanation:

Timelines are very important in any study of history, as they allow one to connect concepts temporally, i.e. that is to say, with respect to time.

reasoning from several particular examples to establish a general principle

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.