Correct option is A

Logic: 1st letter is the opposite letter of 2nd and 2nd letter + 2 = 3rd letter
Option (a) NMP → N ↔ M +3 = P
Option (b) KPR → K ↔ P +2 = R
Option (c) BYA → B ↔ Y +2 = A
Option (d) FUW → F ↔ U + 2 = W
Thus, the correct answer is (a) NMP.