Question

Identify which elements are at the anode and cathode

Answer 1

The one with the highest reduction potential will be what you want to select as the reduction half-reaction and therefore be your cathode. The one with the lowest reduction potential will be what you want to select as the oxidation-half reaction and therefore be your anode. Note, for a good electrochemical cell you want a cathode with a large positive reduction potential and an anode with a large in magnitude negative number reduction potential. However, you can have both reduction potentials be positive or negative just as long as one is larger than the other (higher up on the table). ..

it was in textbook.. and I know it clearly too...
so hope this helps!!