6. Qualitative research studies:
A. Require valid and reliable research instruments.
B. Require complete objectivity of the researcher.
C. Measure emotional responses rather than object physiologic responses.
D Do not make use of inferential statistical techniques.

Correct option is (D)

Explanation:

Qualitative research is carried out by the researcher to understand a phenomena without using quantitative techniques. The variables are not quantified.Though, it can act as a boundary study from quantitative research.

A qualitative research requires the research instruments to be objective and objectivity of researcher. It measures social and emotional responses in the form of people's experiences, opinions and beliefs. It however, does not require use of mathematical or statistical techniques to make inferences or conclusions.

a) it is located in central mexico.

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.