The correct answer is B. Socioeconomic class.
Explanation
The the socioeconomic class is an economic term used to refer to the economic capacity of individuals or groups that classify them in socioeconomic classes. Generally, this depends on three factors: low, medium and high and it has a lot of factors like the education level, the health of the person, his/her salary, his/her work and how much free time she or he has. Those factors are an indicator of the socioeconomic class, for example, some people can not access to the first education (low socioeconomic class) while other groups can access to the postgraduate education (high class). According to this, if Hassan is collecting information about the income of his family and the education levels and occupations of its members he is investigating his family socioeconomic class as both education and income are factors that define a socioeconomic class. So, the correct answer is B. Socioecinomic class.
