Answer:
a. macrosociology
Explanation:
Macrosociology: In sociology, the term macrosociology is defined as a sociological approach that signifies the populations and social systems analysis on quite a large scale, social structure's level, and at a theoretical abstraction's level.
Macrosociology focuses on large-scale social processes, for example, social change and social stability.
Example: Study of economy and social class.
In the question above, the statement signifies the importance of macrosociology.
