Marcus lists the things he'll need to do to solve his problem and assigns each task a deadline. Which stage of the problem-solving process includes this action?

Develop an Action Plan

Explanation:Step 5: Develop Action Plan- this is thr stage in which one defines all the things that they will need in order to deal with the root cause of the problem and makes sure that this problem doesn't spread out to other people.

This is when a time is set and who is in charged and steps are defined which will be taken towards resolving the problem.

the answer is true!