Explanation:

Here’s what’s going on with these letter-cluster pairs:

- Option 1: XHEP - KVRA

• Let’s check the relationship — it’s not a simple reverse or shift.

• Seems random. Not a clear link.

- Option 2: ARNI - RMIZ

• Look closely. If you reverse "ARNI" you get "INRA", which isn’t "RMIZ".

• But notice each letter is shifted:

A ? R (+17), R ? M (-5), N ? I (-5), I ? Z (+17).

• Okay, no consistent pattern, feels off.

- Option 3: OLEV - EVOL

• This is "LOVE" backwards if you swap the L and E.

• Actually, "OLEV" reversed is "VELO". "EVOLO" is just "OLEV" backwards with an extra O.

• Some mirroring or reversing is going on.

- Option 4: TSRA - ZIHG

• If you reverse "TSRA", you get "ARST", which doesn't map directly.

• Letter shift: T ? Z (+6), S ? I (-10), R ? H (-10), A ? G (+6).

• Again, not a simple or matching transformation. Odd pattern.

So what’s the odd one out?

All pairs except option 3 involve some complicated inconsistent transformation.

But Option 3: OLEV - EVOLO — this is the only pair where the second cluster is a direct manipulation (reversal and extension) of the first.

So, the answer is Option 3: OLEV - EVOLO. That’s the odd one out here.

Correct answer: Option 3: OLEV - EVOLO.

This is the only pair where the second cluster is a simple and direct transformation of the first, while the rest either involve inconsistent or unclear changes.

Hope that clears it up!