The answer is: Cities
Approximately, around 80% of united states population live in the cities. This happen because most of job opportunities that exist in united states (whether it's art, technology, or manufacturing) are located in the cities.
Because of this, even people who born in rural areas start to move to inner cities in order to find jobs and sustain their living.
Option B
random sample type of sample would be representative of a whole group
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Explanation:</u></h3>
A simple random sample is a subset of a demographic population in which every part of the subset has a uniform likelihood of being preferred. A simple random sample is intended to be an impartial portrayal of a collection.
Each member of the population being considered should possess an equivalent probability of being chosen. A sampling error can transpire with a simple random sample if the specimen does not end up exactly matching the population it is assumed to reproduce.
Wait sorry can you translate it to english pls
The answer is
Gold could be traded for salt, which was used to preserve food and maintain health. Hope this helps. :)
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