Let us visualize the steps horizontally ;
Left Extreme = TOP most , Gradually decreasing as it goes towards right, & Right extreme = Bottom most
Six Steps: _ , _ , _ , _ , _ , _
According to question:
Ariel, Bailey, Corinne, Darryl, Edgar, and Fei = Let it be A, B, C, D, E, F respectively.
Fei will be on the step third from the bottom
=> _ , _ , _ , F , _ , _
Darryl and Edgar will be on consecutive steps, but not necessarily in that order
=> _ , _ , _ , F , D, E or _ , D , E , F , _ , _ or D , E, _ , F , _ , _
Bailey will be two steps below Ariel
=> A , _ , B , F , D, E or (_ , D , E , F , _ , _ )=not possible or D , E, A , F , B , _
Now, Corinne will have only one place left within two possibilities:
=> A , C , B , F , D, E or D , E, A , F , B , C
ANSWER:
=> Bailey = 2nd step from bottom, 3rd step from top
=> Corinne = Bottom step, 2nd step from top