Find the missing character?

Answer: Option D

Logic (Row-wise):
Sum of the Alphabetical Order of the Letters = 26.

Z = 26
S + G = 19 + 7 = 26
M + D + I = 13 + 4 + 9 = 13.
F + E + H + Missing Character = 26
Missing Character = 26 - 6 - 5 - 8 = 7.
Missing Character = 7 = G.