Verified Answer :

W0lf93

In the given nuber 751,486: the digits 751 is at hundred thousandth position. Because, 7 the position is hundred thousandth; 5th digit is at ten thousandth; and 1st digit is at thousandth place. So, the name of the period that has digits 751 is hundred thousandth.

The correct answer is:

The thousands period

Explanation:

The periods of digits in a number are grouped by 3 digits at a time.  The ones, tens and hundreds are in the hundreds period.  The thousands, ten-thousands and hundred-thousands are in the thousands period.  This is easy to remember because each value in this period ends in the word "thousands."