Final answer:
Option a)Total Slack is the amount of time a task can be delayed without delaying the project's completion date.
Step-by-step explanation:
The amount the finish date on a task can be delayed before the completion of the project will be delayed is known as Total Slack(option a).
Total Slack is the total amount of time that a task can be delayed without affecting the project's overall completion date. It represents the flexibility in the project schedule.
For example, if a project has a total slack of 5 days, it means that any task can be delayed by up to 5 days without affecting the project's completion date.