The number -38 belongs to the set of integers.
Here's a brief overview of the sets mentioned:
- Natural Numbers: The set of positive integers (1, 2, 3, ...). Negative numbers are not included.
- Irrational Numbers: Numbers that cannot be expressed as a fraction of two integers (like √2, π). -38 is a rational number (it can be expressed as -38/1).
- Whole Numbers: The set of non-negative integers (0, 1, 2, ...). Negative numbers are not included.
- Integers: The set of all whole numbers and their negatives (..., -3, -2, -1, 0, 1, 2, 3, ...).
Thus, the correct response is integers.