Final answer:
The most reasonable domain for selling bananas at $0.50 per pound is Whole numbers, which includes all non-negative integers that represent possible quantities to purchase.
Step-by-step explanation:
The question asks about the reasonable domain for the situation where bananas are sold at $0.50 per pound at a farmer's market. A reasonable domain would be a set of values that reflects possible amounts of bananas one could buy.
Since you cannot buy a negative quantity of bananas, and you typically would not buy a fraction of a pound at a farmer's market, the most reasonable domain for this situation would be option B) Whole numbers. Whole numbers include 0, 1, 2, 3, and so on, without any fractions or decimals, which aligns with the typical purchasing patterns of bananas in pounds at a market.