Final answer:
The NIMS management characteristic that involves developing and issuing assignments is Objectives. It ensures clear understanding and accomplishment of strategic, tactical, and support tasks during incidents.
Step-by-step explanation:
The correct answer to which NIMS management characteristic includes developing and issuing assignments is A) Objectives. The National Incident Management System (NIMS) provides a systematic, proactive approach to guide departments and agencies at all levels of government, nongovernmental organizations, and the private sector to work together during incidents. Developing and issuing objectives is a crucial component, as it ensures that everyone involved has a clear understanding of what needs to be accomplished, which can include strategic, tactical, and support considerations to achieve the incident objectives.