H, G
H, I
I, H
J, I
Answer is Wrong!
Answer is Right!
The correct answer is A. H, G.
The given sequence is a simple alternating repetition of the letters Z, Y, X, U, T, S, P, O, N, K. The first letter of each pair is one letter before the last letter of the previous pair. Therefore, the missing letters are H and G.
Option B is incorrect because H is the first letter of the second pair, not the third pair.
Option C is incorrect because I is the second letter of the second pair, not the third pair.
Option D is incorrect because J is not a letter in the given sequence.