Approximately how close is russia to alaska a) 5 miles b)50 miles c)500 miles d)5000 miles

The answer is B) 50. It's actually about 55 miles, but 50 is the closest answer. Russia and Alaska are divided by the Bering Strait, which is about 55 miles at its narrowest point.
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This would be an open primary. a closed primary people can vote only prior to election day if the party if they are registered. independent voters can not participate. there is not a wide-open primary, but there is a semi-open primary.

The peak above is part of the  sierra madre occidentals ,  a chain of volcanic mountains that runs through the middle of central america.