1)maximizing the difference between the input and output.
2)minimize the input.
3)minimize the input.
Step-by-step explanation:
The available three options are minimizing input, maximize output, and maximize the difference between output and input.
1) The manufacturer of steel rings can sell all the rings at a fixed selling price. At the same time, the per unit cost of production also increases. Thus the manufactures's focus should be in increase the profit by maximizing the difference between the input and output.
This is because, when the firm follow this criterion, it maximizes the difference between the total revenue and total costs.
2)
From the buyer's point of view, the aim is to pay the lowest price for the goods they are purchasing. Thus the buyer's criteria should be to minimize the input.
3)
The book publisher aim is to minimize the sale. He can sale more copies at a low price only if the cost which he has incurred in the publishing of the book is less. Thus the criteria for the book publisher should be to minimize the input.