The market process ensures that, when all transactions are voluntary, resources get allocated to the use where they are valued the most

Suppose that in an hour Joe can prepare 10 sandwiches or 5 pizzas. The opportunity cost of Joe producing one sandwich is

A) 2 pizzas. B) 1/2 pizza. C) 5 pizzas. D) 1 pizza.

The market for smartwatches has begun to grow, due in part to the success of the Apple Watch

Following the successful launch of the Apple Watch in 2015, companies such as Samsung, Sony, and LG have all developed products to compete with the Apple Watch. The smartwatches introduced to compete with the Apple Watch would be considered A) complements to the Apple Watch. B) substitutes for the Apple Watch. C) normal goods compared to the Apple Watch. D) inferior goods compared to the Apple Watch.