Final answer:
The concept of distance decay is best described when fewer people read the Indianapolis Star newspaper the farther you are away from Indianapolis.
Step-by-step explanation:
The concept of distance decay is best described in option OD. Distance decay refers to the decrease in interaction or connectivity between places as the distance between them increases. In this scenario, it suggests that as people move farther away from Indianapolis, fewer people read the Indianapolis Star newspaper. The decrease in newspaper readership is directly related to the distance from the source, which is Indianapolis in this case.
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