Choose the option which best expresses the meaning of the idiom/phrase given below.
"Smell a rat"

Correct option is C

Option (c) is the correct meaning of the given idiom.
Given Idiom: "Smell a rat"
This idiom means to suspect that something is wrong about a situation; it often suggests a feeling of mistrust or skepticism towards something that might appear normal to others.
Example: He said it was all a simple mistake, but I smell a rat.
Other related idioms with their meanings:
1. Fishy: Giving the impression that something is dishonest or suspect.
2. Something's up: Something is wrong, odd, or unusual.
3. Get wind of: To hear news of something secret or private.
4. Put one's finger on it: To identify something precisely.
5. Have a hunch: To have a feeling or guess based on intuition rather than facts.