hi <3
you can use the keep flip change rule here.
it states that when dividing fractions, to solve them you can keep the first fraction the same, flip the second one and change the sign into a multiply one
thus you get:
1/5 x 5/4
now you can just multiply across to get an answer of 5/20 or simplified this would be 1/4.
i'm not sure if you had options you had to select from but you can drop them below if you need that.
hope this helps :)