The correct statement about \(-9\) is:
It is an integer but not a whole number.
Here's the reasoning:
- Whole numbers are non-negative integers (0, 1, 2, 3, ...), so \(-9\) does not qualify as a whole number.
- Integers include all whole numbers and their negative counterparts, so \(-9\) is indeed an integer.
- Additionally, \(-9\) is a rational number because it can be expressed as \(-9/1\).
Thus, the most accurate description based on the provided options is that \(-9\) is an integer but not a whole number.