Juanita is training for a triathlon, a timed race that combines swimming, biking, and running. consider the following sentence: juanita has only 20 hours this week that she can devote to training. each hour she spends swimming is an hour that she can't spend biking or running. which basic principle of individual choice do these statements best illustrate?

People face trade offs

Explanation: This given case illustrates the concept of public trade offs. This refers to the choices an individual makes in certain situation when there are different alternatives available.

In the given case, Juanita has limited time but a lot of activities to do. Hence she have to make a choice between those different activities. Every decision she makes has its own opportunity cost.

Thus from the above we can conclude that Juanita is facing trade off situation.

answer; (d) one tectonic plate plunges beneath another; (most common,convergent boundaries)

answer; the best answer is (demand);