Select the letter-cluster from among the given options that can replace the question mark (?) in the following series.
BOARD, BOARW, BOAIW, ?, BLZIW, YLZIW
Answer & explanation
Correct answer: option 4

Explanation:
BOARD, BOARW, BOAIW, ?, BLZIW, YLZIW
The logic followed here is :
B → (0) → B → (0) → B → (0) → B → (0) → B → (-3) → Y
O → (0) → O → (0) → O → (0) → O → (-3) → L → (0) → L
A → (0) → A → (0) → A → (-1) → Z → (0) → Z → (0) → Z
R → (0) → R → (-9) → I → (0) → I → (0) → I → (0) → I
D → (-7) → W→ (0) → W → (0) → W → (0) → W → (0) → W
So, the letter-cluster that replaces the (?) to complete the series is "BOZIW"