Barter is the type shown in the statement as Charlie, Leah's neighbor, trades some of her homemade peppers for tomatoes from his garden. They are just exchanging goods in return of goods.
Bartering is the exchange of products or services between two or more individuals without the use of money or a monetary mechanism like a credit card.
Trading is defined as a transaction in which one party provides one good or service in exchange for another party's provision of a different good or service.
Thus, option D, Barter is correct.
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