Family is a term that is difficult to define. when studying sociology it is important to remember that:
a. sociologists only consider people who live in the same household to be a family.
b. sociologists try to keep the definition open to encompass all types of people who are emotionally close to each other.
c. sociologists only consider traditional marriage as a requirement to be a family.
d. sociologists try to keep the definition open so that people who walk by each other on the street are a family.

b. Sociologists try to keep the definition open to encompass all types of people who are emotionally close to each other.            

Explanation :

            In the field of sociology, the sociologists tries to define family as a group of people who come close to each other and they find comfort in their presence.  These people are called as a family who are emotionally attached to one another.

           Family tends to spend time with each other. They understand and cooperate with each other at times of need. They are socially bonded to one another.

Members of the family are emotionally close to each other.

Thus the anwser is --

b. Sociologists try to keep the definition open to encompass all types of people who are emotionally close to each other.        

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.

its tr3way you already know