Final answer:
The Develop controls and make risk decisions step in the RM process requires continuous reassessment until benefits outweigh risks.
Step-by-step explanation:
The RM process step that requires a cycle of continuous reassessment until the benefits of completing the mission outweigh the risks of not completing it is Develop controls and make risk decisions (option 4).
During this step, controls are developed to manage the identified hazards, and risk decisions are made based on a thorough assessment of the risks involved.
It is important to continuously reassess the controls and risk decisions to ensure that they are effective and still appropriate as circumstances may change.