Correct Answer: JECNAC

Solution : Given:
The code for RESIST is OANPOE and the code for DIGENE is CEZAJA.

Divide the letters of RESIST into two parts, reverse the letters of the two parts, and subtract four from the place values of each of the letters –
RES→SER; IST→TSI
S – 4 = O; E – 4 = A; R – 4 = N; T – 4 = P; S – 4 = O; I – 4 = E
Thus, RESIST is coded as OANPOE.
Likewise, divide the letters of DIGENE into two parts, reverse the letters of the two parts, and subtract four from the place values of each of the letters –
DIG→GID; ENE→ENE
G – 4 = C; I – 4 = E; D – 4 = Z; E – 4 = A; N – 4 = J; E – 4 = A
Thus, DIGENE is coded as CEZAJA.
Similarly, follow the same pattern for GINGER –
GIN→NIG; GER→REG
N – 4 = J; I – 4 = E; G – 4 = C; R – 4 = N; E – 4 = A; G – 4 = C

Thus, GINGER is coded as JECNAC. Hence, the fourth option is correct.