Answer:
The correct answer is A that is late start date.
Step-by-step explanation:
Late start date is the filed which comprise of the latest date on which a task could be started without delaying the finish of the project.
The date is grounded on the date when the task is started and also on the late start of the task, late finish dates of the tasks predecessor and the successor as well and also on other constraints.
So, the late start date for the activity is the latest possible time.