The most important additional requirement is commitment to continual improvement (B). The ITIL 4 Specialist: Create, Deliver and Support documentation (Section 4.1.2) identifies this as critical for a team lead to drive ongoing enhancements in service desk performance, aligning with ITIL's continual improvement principle. This ensures the lead fosters a culture of progress, complementing the given skills. Option A is operational and basic; option C is less relevant for a lead role; and option D, while useful, is secondary to improvement focus. The guide underscores leadership in improvement initiatives. Reference: ITIL 4 Specialist: Create, Deliver and Support, Section 4.1.2 - Leadership in Service Desk Roles.
