Answer: See explanation
Explanation: A non-linear production possibilities model assumes that with rational resource allocation decisions, the opportunity cost of producing more will rise. That is, some resources are specialized to be more productive in one use than in another. It is represented with a negatively sloped line because production of different types of products will compete for limited resources. It also illustrates the variations in the amounts that can be produced of two products if both products depend upon the same finite resource for their manufacture.