Final answer:
Enterprise resource planning applications encompass the supplier, customer, and internal supply chain areas.
Step-by-step explanation:
Enterprise resource planning (ERP) applications do indeed span the supplier, customer, and internal supply chain areas, so the statement is true. ERP systems integrate various functions across an organization to streamline operations and improve efficiency. By centralizing data and automating processes, ERP solutions enable better communication and coordination with suppliers, customers, and internal departments.