Final answer:
The primary purpose of using a data warehouse to extract and store data from various systems is to support analytical reporting. This centralized data storage enables sophisticated analysis that aids decision-making within an organization.
Step-by-step explanation:
The primary purpose of extracting current and historical data from multiple operational systems in an organization and storing it in a data warehouse is d. Supporting analytical reporting. The consolidation of data in a centralized location allows for more sophisticated analysis, supporting decision-making processes throughout the organization. Data warehouses are optimized for read access and complex queries, which benefits reporting and analytical tasks rather than enhancing real-time processing, facilitating data backups, or improving data security directly.