C
F
K
B
Answer is Right!
Answer is Wrong!
The missing character is $\boxed{\text{B}}$.
The sequence is a list of letters that are one letter after the previous letter in the alphabet, except for the letter $\text{J}$, which is skipped. Therefore, the next letter in the sequence is $\text{B}$.
A. $\text{C}$ is not the missing character because it is the second letter in the alphabet, not the third letter.
B. $\text{F}$ is not the missing character because it is the sixth letter in the alphabet, not the third letter.
C. $\text{K}$ is not the missing character because it is the 11th letter in the alphabet, not the third letter.
D. $\text{B}$ is the missing character because it is the third letter in the alphabet.