Use the following to answer questions:
Figure: An Individual's Marginal Benefit from a Public Good 
-(Figure: An Individual's Marginal Benefit from a Public Good) Look at the figure An Individual's Marginal Benefit from a Public Good. Assume that two individuals will share consumption of a public good; each individual has the marginal benefit curve shown in the figure. What is the total social benefit from four units of the public good?
Definitions:
Transduce
To convert one form of energy into another, as in sensory systems converting physical stimuli (like light and sound) into neural signals.
Neural Messages
Information transmitted through the nervous system by neuron cells using electrical and chemical signals.
Light Energy
The visible form of electromagnetic radiation, perceived by the human eye and crucial for photosynthesis in plants.
Vestibular Sense
The sensory mechanism responsible for maintaining equilibrium and spatial awareness.
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