If an activity has zero slack, it implies that

A. Is possible when the variables value is known B. Reduces the scope of judgement & intuition known with certainty in decision-making C. Require the use of computer software D. None of the above

A. Must be deterministic B. Requires computer aid for its solution C. Represents data in numerical form D. All of the above

A. An iconic model B. An analogue model C. A verbal model D. A mathematical model

A. Experience B. Judgement C. Intuition D. All of the above