Solution:The pattern followed here is :
{1st letter + 2 = 2nd letter}, {2nd letter + 3 = 3rd letter} & {4th letter = opposite of 3rd letter}
TVYB → (T + 2 = V), (V + 3 = Y) & (Y ↔ B)
BDGT → (B + 2 = D), (D + 3 = G) & (G ↔ T)
LNQJ → (L + 2 = N), (N + 3 = Q) & (Q ↔ J)
But,
HJMP → (H + 2 = J), (J + 3 = M) & (M ↔ N ≠ P)
Hence, HJMP is the correct answer.