Answer:
7/7
Step-by-step explanation:
The given fractions are 7/7, 7/1, 1/7, and 3/7
The number at the top of the fraction is the numerator
The number at the bottom of the fraction is the denominator
For the fraction to give a whole number, the numerator has to be the same as the denominator
Out of the given options, only 7/7 has the same numerator and denominator. Therefore, it will give a whole number