Three of the following four letter-clusters are alike in a certain way and one is different. Pick the odd one out.

Correct option is C

To solve this question, let's analyze the patterns in the given letter clusters:
Option (a) DFIN:
· The position of the letters in the alphabet: D(4), F(6), I(9), N(14)
· Pattern: The positions are increasing sequentially, +2, +3, +5
Option (b) FHKP:
· The position of the letters in the alphabet: F(6), H(8), K(11), P(16)
· Pattern: The difference between consecutive letters is +2, +3, +5.
Option (c) TVZE:
· The position of the letters in the alphabet: T(20), V(22), Z(26), E(5)
· Pattern: The difference between consecutive letters is +2, +4, +5.
Option (d) YADI:
· The position of the letters in the alphabet: Y(25), A(1), D(4), I(9)
· Pattern: The difference between consecutive letters is +2, +3, +5.
Conclusion:
· Options (a), (b), and (d) all follow some form of sequential or arithmetic progression in the positions of their letters.
· Option (c) " TVZE " is the odd one out because its sequence of letters does not follow a consistent or predictable pattern like the others.
The correct answer is (c) TVZE.