Martha had an important meeting after lunch and wanted to avoid the hassle of waiting in line to get a meal at the cafeteria. Hence, she bought a sandwich from a vending machine that was costlier than the meal at the cafeteria. Which of the following influenced Martha's purchase decision? A. Psychological costs.
B. Quality costs.
C. Behavioral costs.
D. Time costs.

Markets and competition in a perfectly competitive market, all producers sell identical goods or services. additionally, there are many buyers and sellers. because of these two characteristics, both buyers and sellers in perfectly competitive markets are pricetakers . true or false: the market for lettuce does exhibit the two primary characteristics that define perfectly competitive markets. true false