Answer:
Rotten apple
Explanation:
Rotten apple :
According to this theory, one rotten apple in the bowl can affect the other apples. Even though all apples are not bad but the scent of the one rotten apple makes all other apples bad.
Like , in all the department one corrupted man makes that department corrupted. In the police department, few corrupted policemen make the police department corrupted.
Therefore answer is ---
Rotten apple
