The answer is 1 I think because opportunity cost is giving up one thing for another as far as I know
The first clue is the fact that it says it is read
This eliminates radio and television.
It also says readers can email and that it is relevant today.
More people are using technology today.
This means that the answer is B
ONLINE MEDIA
vote brainliest if I helped ! :)
<span>Trained athletes tend to have "low" heart rates and "high" stroke volumes than non athletes at rest..
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Athlete's hearts are in reality more productive or efficient and along these lines don't need to function as hard as a non-athlete. An athlete has a bigger stroke volume which implies that they don't need to pump as frequently to accomplish the required cardiovascular yield. Aerobic training brings down the heart rate and expands stroke volume without changing cardiovascular yield at rest or for a given exercise power speaking to an economization of heart function.
2. glossary. hope it helps
