Four letter groups are given in the options, out of which three are alike in a certain way and one is different from them. Choose the odd letter group.

Check the pattern of letter positions:

JNRV → J(+4)=N(+4)=R(+4)=V ✔️
FKOR → F(+5)=K(+4)=O(+3)=R ❌ (not consistent)
LQUX → L(+5)=Q(+4)=U(+3)=X ❌
RWAD → R(+5)=W(+4)=A(+4)=D ❌

Better pattern:

JNRV → positions: 10,14,18,22 (difference = +4 each) ✔️
FKOR → 6,11,15,18 (differences not equal)
LQUX → 12,17,21,24 (differences not equal)
RWAD → 18,23,1,4 (irregular)

Only JNRV follows a consistent +4 pattern.

Final Answer: JNRV