Explanation:

- Let's look at each option:

- Option 1: RSTY

- Letters: R, S, T, Y

- Pattern: R, S, T are consecutive; Y is separated from T by two letters (U, V).

- Option 2: HJLO

- Letters: H, J, L, O

- Pattern: J is two after H, L is two after J, O is three after L. All gaps, no straight sequence.

- Option 3: BDFA

- Letters: B, D, F, A

- Pattern: D is two after B, F is two after D, A loops back.

- Option 4: PQRU

- Letters: P, Q, R, U

- Pattern: P, Q, R are consecutive; U is three after R.

- In Options 1 and 4, the first three letters are consecutive, but one letter (last one) is separated; in options 2 and 3, all letters skip at least one position.

- The odd one is Option 2: HJLO (all have skipping/non-consecutive letters).

- Correct Answer: Option 2 (HJLO)