Use the following to answer questions :
Figure: Shifts in Demand and Supply II 
-(Figure: Shifts in Demand and Supply II) Look at the figure Shifts in Demand and Supply II. The graph shows how supply and demand might shift in response to specific events. Suppose a fall frost destroys one-third of the nation's grapefruit crop. Which panel BEST describes how this will affect the market for vitamin B12 tablets, which are a substitute in consumption for grapefruit?
Definitions:
Environmental Changes
Alterations in the surrounding conditions including climate change, pollution, and natural habitat destruction that impact ecosystems and human societies.
Porter's Model
A framework created by Michael Porter that analyzes an industry's competitiveness and strategic business position through five forces: competition in the industry, potential of new entrants, power of suppliers, power of customers, and the threat of substitute products.
Business Strategy
A long-term plan of action designed to achieve a particular goal or set of goals or objectives within a company.
Criticized
To evaluate the merits and faults of something, often leading to suggestions for improvement or change.
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