The amount of time that an activity can be delayed from its early start without delaying the project end date is called?

Thank you for the invitation

 Option B. A&C

Free float is the amount of time an activity can be delayed without affecting the start time of the succeeding activity.

That is right answer

not 

Option B. C&B

Thanks for the invitation. My answer is C

Thank you for invitation. I seem B. c and b is good answer.

The answer is C.

There are 2 concepts need to be clarified. Float and Total Float.

Float is the amount of time that an activity can be delayed from its early start without delaying the successor activity.

Total Float is the amount of time that an activity can be delayed from its early start without delaying the project end date.

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Appreciation for the invitation. It is option A - Float.

My answer is for option (A)

In my opinion - B. c and b

Based on the given network, what is the sum of floats of activities A, B and C (Floats A+B+C) ?

Of course it is C - Total Float .