Answer:
The correct answer is B) willingness to pay for an additional unit of output at each quantity.
Explanation:
The definition of seller's supply curve is a graphic representation of the relationship between product price and quantity of product that a seller is willing and able to supply. In a graph, quantity of product supplied is on the horizontal axis and product price on the vertical axis.
So, from the given options, the correct one is B) willingness to pay for an additional unit of output at each quantity.