Solution

The letters seem to be progressing alphabetically, and the numbers seem to be increasing by a certain pattern. Let's observe the pattern: From D4W to G5T, the letter increases by 3 (D -> G) and the number increases by 1 (4 -> 5). From G5T to K9P, the letter increases by 4 (G -> K) and the number increases by 4 (5 -> 9). So, it seems like the pattern is that the letter increases by a certain value (3, 4, ...) and the number increases by the same value (1, 4, ...). If we follow this pattern: From K9P to the next term, the letter should increase by 5 (K -> O) and the number should increase by 5 (9 -> 14). So, the next term should start with O14. Among the options, only option 4 has O14L, so the correct answer is: O14L