The true statement about the relationships between the number sets is:
Whole numbers include all natural numbers and 0.
Here's a brief explanation of the other statements:
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Some irrational numbers are also integers. - This is false. Irrational numbers cannot be integers since integers are whole numbers without fractions or decimals.
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All rational numbers are also integers. - This is false. Rational numbers include fractions and decimals (e.g., 1/2, 3.5) that are not integers.
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Not all natural numbers are real numbers. - This is false. All natural numbers are indeed real numbers.
Thus, the second statement is the only true one.