Answer:
(C) 7 * 0.001
Explanation:
There are 3 digits to the right of the decimal point, meaning it goes into the thousandths. One to the right of the decimal point is tenths, and two is hundredths. We know by looking at the expression, that the '7' is located 3 digits to the right of the decimal point, meaning it is in the thousandths. In a regular fraction, this would be 7/1000, hence the name thousandths. Converting this to standard form, it would be 7*0.001 as using the trick whereas, in a division problem, flipping the divisor (not the dividend) or in more advanced terms, getting the reciprocal then multiplying both factors gets you the same thing. This proves that (C) 7 * 0.001 is the correct answer.