Candice is planning her activities for a hot summer day. She would like to go to the local swimming pool and see the latest blockbuster movie, but because she can only get tickets to the movie for the same time that the pool is open she can only choose one activity. This illustrates the basic principle that:. a. people respond to incentives b. rational people think at the margin. c. people face tradeoffs. d. improvements in efficiency sometimes come at the expense of equality,

Option C People face tradeoffs

Explanation:

The reason is that the tradeoff is situation where the wise person value the matter on a set scale and then make a decision to choose the best for the thing that he is ready to sacrifice. In business, it is also called Opportunity cost. You have two options in the scenario, if you go to swimming you can't watch the movie and if you go to movie then you can't enjoy swimming.

Example

When my girlfriend calls me during job timings I have to choose to leave the work or carefully listen to her. If I don't consider the girlfriend call a tradeoff here, I will stay single. So tradeoff are very important.

a recipe serves 8 people, and calls for 5 lbs of apples and 2 cups of flour. you want to prepare it for 24 people. divide 24 by 8 to get 3, and then multiply your ingredients by 3.

so for 24 people, you'll need 15 lbs of apples, and 6 cups of flour.