Before you see a question on the AP Psychology exam, it is usually pretested on a group of college students taking an introductory course in psychology. This group of people are referred to as the

Standardization sample

Explanation:

Standardization sample is a group of individuals which is pretested of a given scenario or exposure prior to start of any research or study so that at the later stage of the research or study, the results obtained by exposing new sample to the same scenario or exposure can be compared with the results obtained for standardized  sample.

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 are the statements