Which statement is true about the relationship between the numbers set a whole whole numbers include all natural numbers and 0B some irrational numbers are also integers C not all natural numbers are real numbers D all rational numbers are also integers

Let's break down each statement to see which one is true:

A. **Whole numbers include all natural numbers and 0.**
- This statement is **true**. Whole numbers are defined as the set of natural numbers (1, 2, 3,...) along with 0 (0, 1, 2, 3,...).

B. **Some irrational numbers are also integers.**
- This statement is **false**. By definition, irrational numbers cannot be expressed as a fraction of two integers, and integers are whole numbers without fractions or decimals.

C. **Not all natural numbers are real numbers.**
- This statement is **false**. All natural numbers are indeed real numbers; natural numbers are a subset of real numbers.

D. **All rational numbers are also integers.**
- This statement is **false**. While all integers are rational (as they can be expressed as a fraction with a denominator of 1), not all rational numbers are integers. For example, 1/2 is a rational number but not an integer.

Thus, the only true statement is **: Whole numbers include all natural numbers and 0.

OK, so if you’re saying that all rational numbers are also integers are false that answer which set of numbers is always rational numbers, decimals, integers or positive numbers or real numbers

Let's clarify the sets of numbers mentioned and whether they are always rational:

1. **Rational Numbers**: These are numbers that can be expressed as the quotient of two integers, where the denominator is not zero. This includes fractions (like 1/2), integers (like 5), and terminating or repeating decimals (like 0.75 or 0.333...).

2. **Decimals**: Not all decimal numbers are rational. For example, √2 = 1.414213... is a non-repeating, non-terminating decimal, which is irrational. However, a decimal like 0.25 or 0.333... is rational because it can be expressed as a fraction.

3. **Integers**: All integers (positive, negative, and zero) are rational numbers because any integer can be expressed as a fraction with 1 as the denominator (e.g., 5 can be written as 5/1).

4. **Positive Numbers**: This term can refer to both rational and irrational numbers. Positive integers (like 1, 2, 3, etc.) are rational, but positive irrational numbers (like π or e) are not rational.

5. **Real Numbers**: This set includes all rational and irrational numbers. Thus, not all real numbers are rational.

### Conclusion:
The set that is always a subset of rational numbers is **Integers**. All integers are rational, but not all rational numbers are integers.