Rina is training for a triathlon, a timed race that combines swimming, biking, and running. consider the following sentence: rina 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? a: rina can use time most efficiently by spending the same amounts of time on swimming, biking, and running. b: people face trade-offsc: people usually exploit opportunities to make themselves better off. d: rina has an incentive to spend more time on swimming than on biking or running.

The answer is: B) People face trade-offs

Explanation:

A trade-off happens when you have to balance two (or three in this case) opposing situations.

Rina has to decide how to divide the time she can spend training. If she chooses to do one activity, she can´t do the other. So she has to balance the time spent on each activity, probably depending on which sport she needs to train the most.

hi,

henry is an economist and wants to understand the relationship between inflation and consumer spending habits. for his research, he needs the consumer price index for 2014 and the inflation rate. based on the prices of goods given, what will he find to be the cpi and inflation rate for 2014? assume that a consumer’s basket for three consecutive years consists of the following:

you dont privide answer choices.

answer - 15% of a inflatation rate is 15% less in cpi