Answer:
The correct answer is A, associational group.
Step-by-step explanation:
A labor union representing the concerns of electrical workers is a type if associational group because it is organized formally and its function is to represent the interests of the electrical workers only.
This classification of types of interest groups helps us to differentiate them by highlighting their main functions. Since a labor union representing electrical workers has this representation as its main objective, it is called associational group.