Atcapability level 4, the use of anintegrated information systemis critical for ensuring that service request management is optimized and continually improving. At this level, organizations focus on enhancing their processes by integrating systems that streamline service request management, providing seamless tracking, fulfillment, and automation across the service lifecycle.

Integrated Information System: This ensures that all data related to service requests is centralized and easily accessible, enabling efficient management and continuous improvement of the service request process.

Option C ("Level 4")is the correct answer because it represents a level where integrated systems support the optimization and continual improvement of the practice​​.

Incorrect Options:

Option A (Level 2): This level focuses on basic organization and does not require integrated systems.

Option B (Level 3): This level involves more structured processes but still lacks the advanced integration seen at Level 4.

Option D (Level 5): This is not a standard ITIL level for service request management capabilities.