Which action is part of the final CDM step?

• A. Collect information
• B. Identify options and determine best course of action
• C. Assess situation, threats, and risks
• D. Act, review, and re-assess

Answer: (D)

In this CDM sequence, the final step centers on putting the plan into action and then checking how it played out. Acting means carrying out the chosen course of action in the moment, applying the decisions you’ve made to de-escalate or manage the situation. Review and re-assess means looking at the results of that action, seeing what worked or didn’t, and updating your approach if the situation changes. This loop—act, observe the outcome, and adjust—keeps you responsive and safe as the environment evolves.

The earlier steps build the foundation: collecting information creates the situational picture, assessing threats and risks deepens understanding of what could go wrong, and identifying options and determining the best course of action selects the plan to implement. But without acting and then re-evaluating, there’s no feedback to improve the response or to adapt to new developments.