Final answer:
To calculate early start, early finish, late start, late finish, and slack in a project schedule, you need to consider the possible start and finish times for each activity and calculate the slack.
Step-by-step explanation:
To calculate early start, you need to determine the earliest possible start time for each activity in a project schedule. This typically involves considering any dependencies between activities and the project's start date. Early finish is calculated by adding the activity's duration to its early start time.
Late start and late finish represent the latest possible start and finish times for each activity. These are calculated by subtracting the activity's duration from its late finish time.
Slack is the amount of time an activity can be delayed without delaying the project. It is calculated by subtracting the activity's early start time from its late start time or by subtracting the activity's early finish time from its late finish time.
Therefore, the correct answer is d) All of the above.