In the media what is the role of a gatekeeper

A gatekeeper is an individual whose role is to relay and transfer information from one person to another through the means of a Mass-medium

Explanation: A gatekeeper is an individual whose role is to relay and transfer information from one person to another through the means of a Mass-medium. They are the determinants of what is to become of the public’s social reality and their view of the world.  He or she conducts the movement of news within the communication channel. Gatekeepers  craft and conduct what is being published to the public.

a is the answer because it just is

trade regulation is a field of law, often bracketed with antitrust (as in the phrase “antitrust and trade regulation law”), including government regulation of unfair methods of competition and unfair or deceptive business acts or practices. antitrust law is often considered a subset of trade regulation law. franchise and distribution law, consumer protection law, and advertising law are sometimes considered parts of trade regulation law.

in general the theory of economics says that the more open to trade a country is the better   the result for the same country and the whole economies.

in real life countries impose taxes, quotas, etc which is not so good for the economies.

this kind of commercial war between the usa and china is slowing down the growth of the whole world so we can say that it is a draw back of trade regulations. and the free trade agreements are benefits of trade regulations.