To answer this question, you need to understand the concept of fractions and the set of numbers that they belong to.
Option A) Rational numbers - This option is correct because fractions are a part of the set of rational numbers. Rational numbers are numbers that can be expressed as a ratio of two integers, where the denominator is not zero.
Option B) Sparkly numbers - This option is incorrect because there is no such set of numbers called "sparkly numbers". It is not a recognized mathematical term.
Option C) Complex numbers - This option is incorrect because complex numbers include both real and imaginary numbers. Fractions can be real numbers, but they are not necessarily complex numbers.
Option D) Ordinal numbers - This option is incorrect because ordinal numbers represent the position or order of elements in a set, such as first, second, third, etc. They do not include fractions.
The correct answer is A) Rational numbers. This option is correct because fractions are a subset of rational numbers.