The table below shows three individual buyers' demand for wheat.Assume that there are three buyers in the market for wheat (data are hypothetical) . 
Refer to the table above.At a price of $6, the market demand for wheat is:
Definitions:
Predominant Form
Predominant form refers to the most stable or commonly occurring form of a chemical species under given conditions.
L-Alanine
An enantiomer of the amino acid alanine, which is a key compound in the biosynthesis of proteins.
Aqueous Solution
A mixture in which water serves as the solvent.
pH
A scale used to specify the acidity or basicity of an aqueous solution, correlating to the concentration of hydrogen ions present.
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