Answer:
B). Functionalist.
Step-by-step explanation:
'Functionalist' perspective is demonstrated as the point of view that views society as a complex collective whole in which each part functions to ensure the stability and harmony of this whole structure.
As per the question, the given quote is associated with the 'functionalist' sociological theory as it talks about 'internalization and contribution of people to fit in and contribute to the operation and stability of the society which represents the complex whole.' Thus, it justifies the above definition appropriately as this view implies the elements of the society are interdependent on each other to promote the unity of this complex structure. Therefore, 'functionalist' is the correct answer.