Correct Answer: OTYD

Solution : Given:
AFKP : DINS :: WBGL : ?

Add 5 to the place value of the previous letter to get the next letter –
A + 5 = F; F + 5 = K; K + 5 = P and D + 5 = I; I + 5 = N; N + 5 = S
Thus, AFKP is coded as DINS.
Similarly, follow the same pattern for WBGL –
W + 5 = B; B + 5 = G; G + 5 = L
Let's check the options –
First option: ORUX; O + 3 = R; R + 3 = U; U + 3 = X
Second option: OSWA; O + 4 = S; S + 4 = W; W + 4 = A
Third option: OTYD; O + 5 = T; T + 5 = Y; Y + 5 = D
Fourth option: OQSU; O + 2 = Q; Q + 2 = S; S + 2 = U

Thus, WBGL is coded as OTYD. Hence, the third option is correct.