On the basis of the logic used in the first pair, select from the substitute alternate question mark in the second pair.

R : Y :: G : ??

The positional value of the English alphabet is given below:

The logic used in the first pair is that R is related to Y through the order of the letters in the English alphabet.

R is the 18th letter in the alphabet, and Y is the 25th letter, which is 7 letters away from R.

R + 7 = Y

Based on this logic, we need to find the letter that is 7 letters away from G in the English alphabet. G is the 7th letter in the alphabet, so we count 7 letters forward from G to get the answer, which is N.

G + 7 = N

Hence, the correct answer is option 3 - N.