The number \( \frac{12}{3} \) simplifies to \( 4 \).
- A whole number is a positive integer or zero, so 4 is a whole number.
- An integer includes both positive and negative whole numbers and zero, so 4 is an integer.
- A rational number is any number that can be expressed as the quotient of two integers, so \( \frac{12}{3} \) is a rational number.
- An irrational number is a number that cannot be expressed as a fraction of two integers.
Given the options, the correct answers would be:
A. whole number
B. integer
C. rational
So, \( \frac{12}{3} \) is a whole number, an integer, and a rational number.