What is the absolute value of -7 D 7 -7 o -1 which of the following numbers is a rational number? sqrt (2) D -5/8 pi 13

The absolute value of a number is its distance from zero on the number line, regardless of its sign. Therefore, the absolute value of $-7$ is $7$.<br /><br />The correct answer is D. $7$.<br /><br />A rational number is a number that can be expressed as the quotient or fraction of two integers, where the denominator is not zero. Among the given options, $\sqrt{2}$ and $\pi$ are irrational numbers, while $-5/8$ and $13$ are rational numbers. Therefore, the correct answer is D. $-5/8$.