Explanation:

Let’s break it down:

- FBXT, TPLH, and CYUQ all have a common pattern: their positions in the alphabet (for each letter) are each spaced four apart. For example, F (6) to B (2) is 4 backwards, B (2) to X (24) is 4 backwards in a modulo 26 system, and so on. Basically, the differences between the letters are consistent if you check the sequence.

- NJFA, though, doesn’t match this spacing game. The letters don't follow that pattern—N (14) to J (10) is 4 backward, but J (10) to F (6) is another 4 backward, and F (6) to A (1) is 5 backward. The last one breaks the streak.

So the odd one out is pretty clear.

Correct Answer: Option 4 – NJFA