Please help!! “There is no more dangerous experiment than that of undertaking to be one thing before a man's face and another behind his back. We should live, act, and say nothing to the injury of anyone.”

How does the author convey his tone?

A. by alerting his son to the dangers of miscommunication

B. by suggesting that his son avoid bringing physical harm to anyone.

C. by discourage his son from experimenting too much

D. by impressing upon his son the importance of being honest.

the legal limit for the drivers who can drive after consuming any amount of alcohol is 21 years.

explanation:

on november 1, 1996, a "zero tolerance law" was put into effect in the new york state.

according to this zero tolerance law, for people under the age of 21 years, it was illegal to purchase and possess alcohol or to drive after consuming any amount of it.

also, the alcohol involvement rate for the drivers under the age of 21 was roughly twice that of elderly drivers.

op: object of preposition

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.