Correct option is D

F + 3 = I
I + 3 = L
L + 3 = O
So, the next letter is O + 3 = R.
Second letter (Q, U, Y, C, ?):
Q + 4 = U
U + 4 = Y
Y + 4 = C (looping back after Z)
So, the next letter is C + 4 = G.
Third letter (S, T, U, V, ?):
S + 1 = T
T + 1 = U
U + 1 = V
So, the next letter is V + 1 = W.
The next term in the series is RGW.
Thus, the correct answer is (D) RGW.