The correct answer is D. N.
The missing character is the next letter in the alphabet after the last letter of the previous word. The first word is “Find”, and the last letter is “d”. The next letter in the alphabet after “d” is “n”. Therefore, the missing character is “n”.
The other options are incorrect because they are not the next letter in the alphabet after the last letter of the previous word. The letter “a” is the first letter of the alphabet, so it is not the next letter in the alphabet after “d”. The letter “t” is the third letter of the alphabet, so it is not the next letter in the alphabet after “d”. The letter “v” is the 22nd letter of the alphabet, so it is not the next letter in the alphabet after “d”. The letter “c” is the third letter of the alphabet, so it is not the next letter in the alphabet after “d”.