Step 1: Identify the common idea behind the listed words.
The list mixes \textit{moral} and \textit{legal} wrongs: e.g., {immorality, wickedness, sin} (moral/ethical), {dishonesty, cheating, betrayal, skullduggery, cutting corners, sneakiness, malingering} (socially frowned upon norm-violations), and {crime, graft} (explicitly illegal). The thread tying them together is violation of accepted norms (moral, social, or legal).
Step 2: Test each option against this scope.
- (A) Aggressive behaviours: Too narrow; many items (e.g., {malingering, dishonesty}) are not aggressive.
- (B) Illegal behaviours: Too narrow; several items ({betrayal, unfairness, sneakiness, cutting corners}) can be unethical yet not necessarily illegal.
- (C) Deviant behaviours: Deviance means departing from societal norms; it flexibly covers immoral, unethical, and illegal acts—hence includes \textit{all} listed items.
- (D) Banned behaviours: Implies explicit prohibition; again, some listed acts may be condemned but not formally banned.
- (E) Vetoed behaviours: “Vetoed” applies to decisions/proposals, not conduct in general; category mismatch.
Step 3: Conclude.
Only Deviant behaviours captures the full set—norm violations across moral, social, and legal domains.
\[
\boxed{\text{Correct Answer: (C) Deviant behaviours}}
\]