Why do public goods demonstrate the limitations of a free market economy?
a. they allow consumers to make all of the economic decisions.
b. they allow government to make some economic decisions.
c. they allow governments to control most economic decisions.
d. they prevent consumers from making economic decisions.

The correct answer is B) they allow the government to make some economic decisions.

Public goods demonstrate the limitations of a free market economy in that they allow the government to make some economic decisions.

When the government decides to intervene in the free market economy increasing the spending in order t create programs that benefit the middle and lower classes, affects the market because it influences the price of some goods that are offered by private companies. The government can offer products and services at a lower price to make it more affordable to people who do not have the money to buy products or services of private companies.

answer; researchers typically cannot control people's sexual behaviors as would be necessary in an experiment;

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.