Choose the correct option: From the given choices, select the odd one out.

Concept

In an ‘odd one out’ letter-series question, every group is checked against the same positional-shift rule between its letters; the groups that follow this shared rule are consistent, and the group whose actual shift breaks the rule is the exception.

Application

1. CEH: C to E is a +2 shift, and E to H is a +3 shift — matches a +2, +3 rule.

2. PRV: P to R is a +2 shift, but R to V is a +4 shift — does not match a +2, +3 rule.

3. TVY: T to V is a +2 shift, and V to Y is a +3 shift — matches a +2, +3 rule.

4. MOR: M to O is a +2 shift, and O to R is a +3 shift — matches a +2, +3 rule.

Cross-check

Three groups (CEH, TVY, MOR) share the identical +2, +3 shift pattern, while PRV alone shifts by +2, +4. Since the majority establishes the rule, PRV is the odd one out.