Every rational number is

• (a) A natural number
• (b) An integer
• (c) A real number
• (d) A whole number

Every rational number is classified as:

• (c) A real number

Rational numbers can be expressed as the quotient of two integers, where the denominator is not zero. This means they include integers, fractions, and whole numbers, but they are all part of the larger set of real numbers. Here's a brief overview of the other options:

Natural Numbers

Natural numbers are the set of positive integers starting from 1 (1, 2, 3, ...). Not all rational numbers are natural numbers.

Integers

Integers include all whole numbers, both positive and negative, as well as zero. While all integers are rational numbers, not all rational numbers are integers.

Whole Numbers

Whole numbers are similar to natural numbers but include zero (0, 1, 2, 3, ...). Again, not all rational numbers fit this category.

In summary, while rational numbers can be natural numbers, integers, or whole numbers, they are definitely classified as real numbers.