Answer:
d. functionalist
Step-by-step explanation:
Emile Durkheim, in his The Division of Labour (1893) says:
"The totality of beliefs and sentiments common to the average members of a society forms a determinate system with a life of its own. It can be termed the collective or creative consciousness."
Durkheim's functionalist theory states that society is composed of social institutions to process its own functions and roles. The theory talks about the necessity of social order to maintain a stable society with shared public values. It largely focuses on macro-level of social structure. A change in one part of the society affects the other.
The employer pays low wages to illegal immigrant for the goods and services he provides to create a social equilibrium. The wage is particularly low as he is 'illegal immigrant', providing a job is in itself problematic but the job at low wage seems like a contract for the function or service he provides. Since a dysfunctional part of the system affects other parts creating social problems.