Which is the best definition of “value”?
a) a quality or idea that is considered important
b) a conclusion made on the basis of evidence
c) a story that explains how things came to be
d) a location in a story that gives the reader clues

The correct answer is A) a quality or idea that is considered important.

Word 'value' is often defined as the importance, usefulness or worth of someone/something. This word has its origins in the Latin word 'valere' which means 'to be worth'. The word 'value' is also interpreted as a belief that people have about what is right, what is wrong, or about what is important in life.

what are the phrases to choose from?

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.