Final answer:
The number -4 is both an integer and a rational number because it is a negative whole number that can be expressed as a fraction.
Step-by-step explanation:
The number -4 belongs to several sets of numbers:
- It is an integer because it is a whole number and it includes negative numbers.
- It is a rational number because it can be expressed as a ratio of two integers (for example, -4/1).
It does not belong to the set of whole numbers because whole numbers start from zero and include only positive integers. It is also not an irrational number because irrational numbers cannot be expressed as a simple fraction.
The correct answer to the question is:
A. integers and
C. rational numbers