Concept:Each letter is shifted by an increasing pattern: +1,+2,+3,+4.Explanation:Positions in ADDA: A=1, D=4, D=4, A=1.Positions in BFGE: B=2, F=6, G=7, E=5.So the shifts are +1,+2,+3,+4.Apply the same shifts to INSP.I=9⇒9+1=10⇒JN=14⇒14+2=16⇒PS=19⇒19+3=22⇒VP=16⇒16+4=20⇒TThus, INSP is coded as JPVT.Answer:JPVT (Option A).