Correct option is A
The given series is: ABC, EFG, IJK, (…), UVW
First term: ABC
Second term: EFG — each letter has moved forward by +4.
Third term: IJK — each letter has moved forward by another +4.
Following the pattern of +6 for the next term: 4. Move each letter in "IJK" forward by +6:
I+6=O
J+6=P
K+6=Q
So, the missing term is OPQ.
Thus, the correct answer is (a) OPQ.