Who among the following distinguished between interest articulation function and other anomic group functions?

Correct option is D

Jean Blondel distinguished between interest articulation and other anomic group functions. Interest groups have been classified by Blondel on the basis of factors responsible for their formation. They are community interest groups and associational interest groups. Interest articulation function is related with interests of different communities. Anomic group functions are a collective response to a particular frustration. These groups are non-associational.
Jean Blondel is a french political scientist specialising in comparative politics. His famous writings are. An introduction to comparative government, cabinets in western Europe thinking politically etc.