Marcy is given her choice of two identical chocolate bars, one of which has been broken into four pieces. marcy chooses the broken candy bar, believing that it has more candy. from piaget's perspective, marcy is showing a lack of indicating that she has not yet completed the transition to the stage of development.

I believe the answer is: conservation; concrete operations

According to piaget, conservation refers to the ability to use logical thinking as a basis for decision making. During the concerete operational stage, people's ability to use rationale thinking had just begun to develop. Which is why people who still haven't finished this stage might had a hard time in separating their emotions and their logic in making a decision.

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.

answer; presidential election years;