Question 1
The correct answer is A.
That is exactly the definition of social role. It comprises a group of behaviors, rights, obligations and beliefs connected to specific social situations. These end up shaping groups of people, within a society, who share equal socioeconomic characteristics and behaviours. Therefore member from each social group are expected to behave according to some specific roles.
Question 2
The correct answer is A.
Primary groups are those constituted by people who share deep emotional bonds, and characterized by long-lasting and very personal relationships established among its members. The most important examples are family and close groups of friends.