Answer: Choice D
Natural Numbers, Whole Numbers, Integers, Rational Numbers
Explanation:
As a positive whole number, it is a Natural Number.
Integers include all the positive and negative whole numbers, and zero.
It can be written as 1972/1 As such it is a rational number. (irrational are values like pi, √3, ∛4 which cannot be expressed as fractions where the numerator and denominator must be integers.