Which of the following is true about negative whole numbers?

Negative whole numbers are indeed considered part of the rational numbers. Rational numbers are defined as any numbers that can be expressed as the quotient or fraction of two integers, where the denominator is not zero. Negative whole numbers can be expressed as fractions, such as -1/1 or -2/1, confirming their classification within the set of rational numbers.

In contrast, negative whole numbers are not classified as natural numbers, which are defined strictly as the set of positive integers starting from 1 with no inclusion of negative values or zero. Furthermore, negative whole numbers qualify as integers; they are part of the integers set, which includes all positive and negative whole numbers as well as zero. Lastly, while negative whole numbers are often noted for lacking a non-negative aspect, they do not include zero as a member of their own category, as zero is neither positive nor negative.