The assumption that is necessary for a linear programming model to be appropriate and that ensures that the value of the objective function and the total resources used can be found by summing the objective function contribution and the resources used for all decision variables is known as
A. negativity.
B. proportionality.
C. additivity.
D. divisibility.

C. Additivity

Explanation:

Addiction is a psychological and physical inability to stop consuming a chemical, drug, activity, or material, even though it is causing psychological and physical harm. ... In these circumstances, a person has a behavioral addiction. Addiction is a chronic disease that can also result from taking medications.

Addictivity is an aspect of being addictive.

answer; rapid growth in buyer demand and high buyer switching cost;

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