Okay, here we have this:
Aida has 5/4 meters of ribbon, and she makes pieces of 1/4 meter, the problem ask us the expression that determines how many pieces she will get:
So, according with this we have here the following division:
Initial size=5/4 meters
Pieces size=1/4 meters
Number of pieces=Initial size / Pieces size
This means that the correct answer is option A.