What is the answer? I need it now

The answer is a:

It's the only one that cannot be simplified. A number that will divide evenly into both the numerator and denominator so it can be reduced, or The numerator must be greater than the denominator, (an improper fraction), so it can be converted to a mixed number.

(I was a teensy bit confused from last time's answer, because it said select the CHOICES below sooo...)