The one that has 18 hairbands and 15 ribbons is the correct answer
Step-by-step explanation:
If you look at the number of hair bands (7) and the number of ribbons (4) then you would see if you subtracted 7 by 4 you would get three so there is the three gap and in 18 and 15 there is also a 3 gap so that is how you know it is correct.