ELFA, GLHA, ILJA, ? , MLNA

here the given pattern is ELFA, GLHA, ILJA, ? , MLNA

we can see that first term of every pattern is alternative term E , G, I so first term for the missing element is K

2nd term of missing element is L in all cases. so here it is also L

3rd term in all cases is again alternative terms starting from F , and continued as H, J and hence the 3rd term of missing pattern is L

and 4th term in every case is A

so the missing pattern is KLLA