Which of the following letter-clusters should replace # and % so that the pattern and relationship followed between the letter-cluster pair on the left side of :: is the same as that on the right side of :: ?
# : EIC :: QLZ : %

Given: # : EIC :: QLZ : %

Logic: 1st and 3rd three letters are - 1, + 1 and - 1 place.

Now, we check each options.

Option (a): # = ERB, % = RNW (Not Follow)

E - 1 $$\neq$$​ E, R + 1 $$\neq$$​ I, B - 1 $$\neq$$​ C

Q - 1 $$\neq$$​ R, L + 1 $$\neq$$​ N, Z - 1 $$\neq$$​ W

Option (b): # = DJF, % = UPV (Not Follow)​

D - 1 $$\neq$$ E, J + 1 $$\neq$$ I, F - 1 $$\neq$$​ C

Q - 1 $$\neq$$ U, L + 1 $$\neq$$ P, Z - 1 $$\neq$$ V

Option (c): # = EDG, % = PNY (Not Follow) ​

E - 1 $$\neq$$ E, D + 1 $$\neq$$ I, G - 1 $$\neq$$​ C

Q - 1 = P, L + 1 $$\neq$$ N, Z - 1 $$\neq$$ Y

Option (d): # = FHD, % = PMY (Follow)​

F - 1 = E, H + 1 = I, D - 1 = C

Q - 1 = P, L + 1 = M, Z - 1 = Y

Thus, correct option is (d).