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 :: ?
# : CRX :: ELU : %​

Given: # : CRX :: ELU : %​

Logic: +2, + 2, +1 pattern

Now, we check each options.

Option (a): # = BIY, % = HNW (Not Follow)

B + 2 $$\neq$$​ C, I + 2 $$\neq$$​ R, Y + 1 $$\neq$$​ X

E + 2 $$\neq$$​ H, L + 2 = N, U + 1 $$\neq$$​ W

Option (b): # = AHW, % = GMY (Not Follow)​

A + 2 = C, H + 2 $$\neq$$ R, W + 1 = X

E + 2 = G, L + 2 $$\neq$$​ M, U + 1 $$\neq$$ Y

Option (c): # = APW, % = GNV (Follow)​

A + 2 = C, P + 2 = R, W + 1 = X

E + 2 = G, L + 2 = N, U + 1 = V

Option (d): # = BPU, % = DNY (Not Follow)​

B + 2 $$\neq$$ C, P + 2 = R, U + 1 $$\neq$$​ X

E + 2 $$\neq$$ D, L + 2 = N, U + 1 $$\neq$$ Y

Thus, correct option is (c).