Final answer:
The purpose of the Incident Command System (ICS) is to ensure public and responder safety, to achieve incident management goals, and to ensure the efficient use of resources during an emergency.
Step-by-step explanation:
The purpose of the Incident Command System (ICS) is multifaceted. The ICS is designed to ensure responder and public safety, effectively achieve incident management goals, and ensure the efficient use of resources during an emergency or incident. This management tool enables coordinated efforts among various emergency response and public service agencies to handle disasters and emergencies effectively. Therefore, the correct answer to this question would be D. All of the above.