Correct option is D
Logic: +4
First Position
G to K (+4)
K to O (+4)
O to S (+4)
Second Position
D to H(+4)
H to L(4)
L to P(+4)
Third Position
J to N (+4)
N to R(+4)
R to V(+4)
Following the identical patterns.
All the position follows the same pattern of increasing by 4.
Thus the next term in the series will be WTZ.