Use the figure below to answer the following questions. 
Figure 2.1.2
-Refer to the production possibilities frontier in Figure 2.1.2.At point C,what is the opportunity cost of increasing the production of Y from 20 to 50 units?
Definitions:
Central Nervous System
The complex of nerve tissues that controls the activities of the body. In vertebrates it comprises the brain and spinal cord.
Sympathetic Nervous System
Part of the autonomic nervous system that regulates involuntary responses by stimulating activities associated with the fight-or-flight response.
Endocrine System
A network of glands that produce and release hormones to regulate various body functions including metabolism, growth, and mood.
Glands
Organs in the body that secrete hormones or other substances directly into the blood or onto a surface within or outside the body.
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