WHAT IS A RECIPROCAL FRACTION?

A. THE INVERSE OR OPPOSITE FORM OF A FRACTION.
B. A FRACTION IN ITS SIMPLEST FROM.
C. A FRACTION THAT HAS THE SAME NUMERATOR AND DENOMINATOR.

A. THE INVERSE OR OPPOSITE FORM OF A FRACTION.

A reciprocal fraction refers to the inverse or opposite form of a fraction. This means that the reciprocal of a fraction is obtained by interchanging the numerator and denominator. For example, the reciprocal of the fraction 1/2 is 2/1 or simply 2.

So, the correct answer to your question is:
A. The inverse or opposite form of a fraction.