Correct option is C
The correct option to fill in the blank is
(c) colder.
Explanation: The sentence shows a
comparison over time (“day by day”), which requires the
comparative degree of the adjective “cold.” Hence, “colder” is correct. (Hindi meaning – ठंडा, अधिक ठंडा).
Example: It’s getting
colder each evening as winter approaches.
Why other options are incorrect:
· (a)
Cold – Positive degree; does not show comparison (साधारण ठंडा).
· (b)
The coldest – Superlative degree; used for comparison among three or more (सबसे ठंडा).
· (d)
Very colder – Incorrect because
‘very’ is not used with comparative adjectives.
Information booster: Use “more” or “-er” for comparison between two things or gradual change, never with “very.”