Answer:
Marginal Product is 2
Explanation:
Marginal Product (MP) is defined as the ration of change in quantity of output produced to the change in quantity of input raw material
Change in quantity of input raw material 
Change in quantity of output of products = 13 - 9 = 4
Marginal Product (MP) 
Marginal Product is 2
Setting goals and objectives is a part of planning.
Planning includes both the process of developing a plan and its accurate and timely execution.
Planning may be extremely helpful in avoiding mistakes and seeing possibilities. Good planning demonstrates management's familiarity with the company and their consideration of changes in "products," management, finance, and—perhaps most importantly—the external environment, which includes markets, competitors, users, and regulations. Planning aids in future prediction, future visibility, and the construction of a link between the present and this future.
To know more about planning.
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Answer: The correct answer:
A. Managing monetary policy.