Final answer:
The application that is mainly beneficial for managing market demand, resource and capacity constraints, and real-time scheduling is Enterprise Resource Planning (ERP).
Step-by-step explanation:
The application whose primary business benefits include market demand, resource and capacity constraints, and real-time scheduling is C. Enterprise Resource Planning (ERP). ERP systems are designed to integrate various business processes and facilitate the flow of information within an organization, thereby ensuring that decision-making is based on accurate and real-time data. These systems help in managing demand by facilitating better demand forecasting and aligning inventory levels with it. They also take into account resource limitations and provide tools for effective capacity planning. Lastly, ERP solutions often include advanced scheduling features, enabling businesses to orchestrate and optimize their operations in real-time.