Four year-old Dimitri agrees that two rows of nickels, equally spaced, contain the same number of nickels. If the spacing increased between the nickels in one row, he thinks that row now has more nickels. Dimitri has NOT acquired the concept of:

a. egocentrism.
b. conservation.
c. centration.
d. object permanence.

Dimitri has not acquired the concept of EGOCENTRISM.

Explanation: EGOCENTRISM refers to the constant following of one's egotistical desires to an extreme. It is the inability to accurately assume or understand any perspective other than one's own.

the correct answer is individualism and exchange. at this stage, children begin to question the rules, because they can see that there is more than one side to them. different individuals have different viewpoints. they won't be able to reach this stage because of ignorance, a lack of ethics or personal biases. that is because people with that characteristiscs are not able to distinguish what is good or what is bad and they can't pursue their individual interests.

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.