GFD, JIG, MLJ, ?

G is preceded by F in the alphabetical series. D is 2 places before F in the alphabetical series.
J is 3 places after G in the alphabetical series.

J is preceded by I in the alphabetical series. G is 2 places before I in the alphabetical series.
M is 3 places after J in the alphabetical series.

M is preceded by L in the alphabetical series. J is 2 places before L in the alphabetical series.

P is 3 places after M in the alphabetical series. Therefore, the following term must start with P.
P is preceded by O in the alphabetical series. M is 2 places before P in the alphabetical series. Therefore, the next term must be POM. Hence, option E is the right answer.