Answer:
cross-sectional
Explanation:
Cross-sectional studies are used to measure the exposure and outcome of a population or study group at a specific point of time. It is used in different fields including developmental psychology, social science, and education, based on the interest area of research. It is an observational method of research because researcher cannot manipulate the variables in this type of research.
Caste system
social institution
answer: Tax-exempt nonprofits often make money as a result of their activities and use it to cover expenses. In fact, this income can be essential to an organization's survival. As long as a nonprofit's activities are associated with the nonprofit's purpose, any profit made from them isn't taxable as "income."
