Final answer:
The correct answer to the fill-in-the-blank question is 'activities.' Activities are the individual tasks that need to be completed to fulfill the objectives of the larger task or project.
Step-by-step explanation:
As sub-elements of a task, these activities need to be accomplished to achieve the objectives of the task. The correct answer is c) Activities. Activities are specific tasks that must be performed within a project or as part of a task. Unlike milestones, which represent significant points or goals, or deliverables, which are physical or intangible outputs of a task, activities are the actual steps taken to complete a task and achieve the objectives. Constraints, on the other hand, are limitations or conditions that must be taken into account when planning and executing a task.
Milestones, deliverables, and activities are the sub-elements of a task that need to be accomplished to achieve the objectives. As sub-elements of a task, milestones, deliverables, and activities need to be accomplished to achieve the objectives of the task.