The correct answer is provided through a comparison of Choice D with other options, highlighting the economic aspects present in Choice B.
Choice D, Tabitha authors mystery books for teenagers, does not include the answers to the primary economic questions because it does not provide information related to production, pricing, or consumer demand. On the other hand, choice B, where bagels cost $0.85 each at a local bakery, involves aspects of pricing influenced by production costs and consumer behavior.