Back to Assignment Attempts 0 Keep the Highest 0 / 1 1. Scarcity, opportunity cost, and marginal analysis Amy is training for a triathlon, a timed race that combines swimming, biking, and running. Consider the following sentence: In order to swim for an hour, Amy must take time away from work, where she earns $10 per hour. This is in addition to paying a $4 entrance fee for the pool. Which basic principle of individual choice do these statements best illustrate? O People usually exploit opportunities to make themselves better off. O Trade can make everyone better off. O Markets are usually a good way to organize economic activity. O The cost of something is what you give up to get it. Grade It Now Save & Continue