Direction: what do you mean by "smell a rat" ?

Options

A. to show signs of cowardice
B. to smell the presence of a rat
C. to suspect that something is wrong about a situation
D. to become polite

Answer

C

Explanation

smell a rat: to recognise that something is not as it appears to be or that something dishonest is happening : suspecting and questioning.
Look at the sentence :
This is another reason for union leaders to smell a rat, it looks this another attempt to privatise more city services. Here, to suspect that something is wrong about a situation is the right option.