Step 1 — Read the full sentence:
(a) The house was silent when we got back,
(b) save for some poor creature who was
(c) screaming away in one of the distant ward,
(d) and a low, moaning sound from Vinod's room.
Step 2 — Check part (a):
"The house was silent when we got back," — this is grammatically correct.
Step 3 — Check part (b):
"save for some poor creature who was" — this is also correct, as "save for" means "except for."
Step 4 — Check part (c):
"screaming away in one of the distant ward," — here lies the error. The word "ward" should be plural ("wards") because it refers to one among many hospital sections or divisions. The singular form makes the sentence grammatically wrong.
Step 5 — Check part (d):
"and a low, moaning sound from Vinod's room." — this part is correct.
Step 6 — Correction:
Corrected phrase: "screaming away in one of the distant wards."
Final Answer:
The correct option is (C) : c.