Using the stepping-stone method to solve a maximization problem, we would choose the route with the largest positive improvement index.

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The stepping-stone method involves testing different routes by adding or subtracting the transportation cost from each non-basic variable in turn. This creates an improvement index, also known as net change, for each route. The route with the largest positive improvement index is chosen since it would lead to the greatest increase in the objective function value if the corresponding basic variable were made non-basic.

Using the Stepping-Stone Method to Solve a Maximization Problem, We