Step 1: Identify the starting point.
Sentence (ii) sets the background: unfamiliar voices and a shut door → natural beginning.
Step 2: Next logical event.
Sentence (i): The narrator hesitates and does not knock → follows after noticing the closed door.
Step 3: Decision.
Sentence (iv): The narrator chooses to wander down the passage.
Step 4: Final consequence.
Sentence (iii): The passage leads to a bright kitchen → this is the logical ending.
Thus, the correct coherent sequence is:
\[
(ii) \;\rightarrow\; (i) \;\rightarrow\; (iv) \;\rightarrow\; (iii)
\]
\[
\boxed{\text{(C)}}
\]

