Answer:
Explanation:
Once you understand the vocabulary, I'm sure you could do another question like this. It means that you need to take all the fractions that equal 1/1 or just 1.
So to get to the answer, BEF is what you are looking for.
Notice what each of BEF have in common.
Their numerators (Top) and denominators (bottom) are the same. That means they cancel down to 1.