Explanation:

Let’s break this down step by step:

- CFZ : HIU

- C ? H (+5)

- F ? I (+3)

- Z ? U (-5)

- So the pattern is +5, +3, -5 on the alphabets.

Now, with the target pair: ? : JLS

- J is the 10th letter. Reverse the shift for the first spot:

- 10 - 5 = 5 ? E

- L is the 12th letter. Reverse the +3 shift:

- 12 - 3 = 9 ? I

- S is the 19th letter. Reverse the -5 shift (so +5):

- 19 + 5 = 24 ? X

So, the answer should be EIX.

- Option 1: EHW – Doesn’t match the pattern above.

- Option 2: EIX – Matches exactly.

- Option 3: FHX – Doesn’t fit the pattern.

- Option 4: EIY – Only off by the last letter.

What this really means is... the answer is clear. EIX is right for the pattern.

Option 2: EIX