. Every rational number is
A: A natural number
B: An integer
C: A real number
D: A whole number
Explanation: A number r is called a rational number, if it can be written in the form where p and q are integers and q ≠ 0.
And the collection of all rational numbers and irrational numbers called the real numbers.
Hence, every rational number is a real number.
Final Answer: Hence, the correct option is (C) a real number.