An irrational fraction refers to a number that cannot be expressed as the ratio of two integers. All types of fractions listed in your options (with zero in the numerator, a negative integer as the numerator, a fraction with it as the numerator or denominator, and an improper fraction) can be rational, depending on the numbers involved.
However, none of these options describe an "irrational" fraction. An example of an irrational number would be something like \(\sqrt{2}\) or \(\pi\), which cannot be expressed as fractions of integers.
Therefore, the answer is: None of the above describe a fraction that is irrational.
If the question is to identify these types of fractions and determine which can lead to irrational results, then we would conclude that the options provided typically describe rational numbers rather than irrational ones.
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