Apply the same pattern used in the following group and find the correct option.

KLM : NOP :: STU : ?

The correct option is VWX.

To solve this letter analogy, let us examine the pattern between the given sets of letters.

Step 1: Analyze the first pair (KLM : NOP)
Let us look at the alphabetical positions of each letter:
• K is the 11th letter, L is the 12th letter, M is the 13th letter.
• N is the 14th letter, O is the 15th letter, P is the 16th letter.
Notice that NOP immediately follows KLM in consecutive alphabetical order without skipping any letters.

Alternatively, looking at letter-by-letter shifts:
• K + 3 = N (11 + 3 = 14)
• L + 3 = O (12 + 3 = 15)
• M + 3 = P (13 + 3 = 16)

Step 2: Apply the same pattern to the second pair (STU : ?)
Let us look at the alphabetical positions of STU:
• S is the 19th letter, T is the 20th letter, U is the 21st letter.
Applying the +3 shift to each letter:
• S + 3 = V (19 + 3 = 22)
• T + 3 = W (20 + 3 = 23)
• U + 3 = X (21 + 3 = 24)

The 3-letter sequence that immediately follows STU in alphabetical order is VWX.

Therefore, the missing group of letters is VWX.