Final answer:
Modeling serves as an aid to decision making in managerial decision making. The correct option is (A).
Step-by-step explanation:
The correct answer is A) An aid. Modeling does not replace managerial decision making, but instead serves as an aid to decision making.
Modeling allows managers to simulate different scenarios and predict the potential outcomes of their decisions.
It helps them gain a better understanding of the consequences and risks associated with different choices. By using models, managers can make more informed and effective decisions.