What does the contact hypothesis say? A. There should always be only one group in charge when several
groups are together.
B. People who dislike one another will get along if they get to know
one another as individuals.
C. Fights between groups are always going to happen when they are
together
D. Prejudice will only get worse if different groups are asked to work
together.

i would say a

Explanation:

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.

what's this it's not giving you what have to do.