The line chart below shows potato prices per pound for each month from January (month 1)to December last year.By looking at this chart you can see the lowest potato prices occurred in ____________________. 
Definitions:
Purely Competitive Market
A market structure characterized by many buyers and sellers, homogeneous products, and the ease of entering and exiting the market.
Unit Price
The cost per unit of volume or weight of a product, allowing for easier comparison of costs between different sized packages of the same item.
Marginal Revenue Curve
A graphical representation that shows how the revenue changes when additional units are sold, illustrating the relationship between quantity sold and revenue.
Purely Competitive Firm
An entity operating in a market that features a high level of competition and no significant barriers to entry, leading to no single firm influencing market prices.
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