Cost Accounting (D) in Oracle Fusion Cloud SCM tracks and analyzes manufacturing costs, including materials, labor, and overhead, to support financial reporting and decision-making. For example, it might break down a $10,000 production run into $6,000 materials, $3,000 labor, and $1,000 overhead, revealing cost drivers. Option A (Manufacturing Execution) tracks production activities but doesn't analyze costs. Option B (Supplier Qualification) assesses suppliers, not manufacturing expenses. Option C (Inventory Management) monitors stock, not cost details. Cost Accounting provides granular insights, enabling cost reduction strategies and accurate profitability analysis, essential for financial health.