A
X
W
B
Answer is Right!
Answer is Wrong!
The missing character is B.
The sequence is a simple alternating repetition of the letters A and B. The first letter is A, the second letter is B, the third letter is A, and so on.
The first option, A, is the first letter in the sequence. The second option, X, is not in the sequence. The third option, W, is not in the sequence. The fourth option, B, is the second letter in the sequence.
Therefore, the missing character is B.