Final answer:
Modeling serves as a tool to aid in managerial decision-making by replacing real systems with simplified versions for easier examination and analysis.
Step-by-step explanation:
Modeling does not replace managerial decision-making but instead serves as a tool for decision-making.
Modeling in the business context is a systematic approach where a real system is replaced by something similar yet easier to examine. This simplification of complex systems allows managers to explore different scenarios and predict the outcomes of various decisions. The correct option is (a): Modeling replaces the real system with something similar but easier to examine. Options b, c, and d are incorrect as they do not accurately describe the purpose of modeling in the context of managerial decision-making. A model doesn't necessarily have to be more interesting, have more realistic properties, nor include more details than the real system; its main purpose is to aid in understanding and analyzing the key aspects that affect decision-making processes in a more convenient and manageable way.