The missing character is N.
The first letter of each month of the year is followed by the next letter of the alphabet, except for J and F. The first letter of January is J, and the next letter in the alphabet is F. However, February comes before March, so the first letter of February is F. The first letter of March is M, and the next letter in the alphabet is N. Therefore, the missing character is N.
A. H is not the missing character because the first letter of January is J, and the next letter in the alphabet is F. However, February comes before March, so the first letter of February is F.
B. N is the missing character.
C. T is not the missing character because the first letter of March is M, and the next letter in the alphabet is N.
D. V is not the missing character because the first letter of April is A, and the next letter in the alphabet is B.