Correct option is D
Given - XBF, UYC, RVZ, OSW, ?

Logic - each letter decreased by 3.
Each letter in every position is decreasing by 3 in alphabetical order:
First letters: X −3→ U −3→ R −3→ O −3→ L
Second letters: B −3→ Y −3→ V −3→ S −3→ P
Third letters: F −3→ C −3→ Z −3→ W −3→ T
So, the missing group is: LPT
Final Answer:
The group that completes the pattern is LPT
Final Correct Option: (D) LPT