Answer:
The correct answer is letter "B": completion of a major deliverable.
Explanation:
Project schedule planning is an activity in which firms set the step-by-step procedures of their projects and time them to determine the length of implementing the plan. Milestones serve as check-up points that allow firms to evaluate the progress of the project and determine if there are adjustments necessary to finish the project on the time planned.
In front of a major overload, the firm will be able to outline the resources necessary to finish the work as established in the original plan.