Which of the following is not a defence to negligence?
Res ipsa loquitur (i.e. the thing speaks for itself).
Volenti non fir injuria.
Contributory negligence.
Cause of action if arose was due to the illegla conduct of the plaintiff.
Res ipsa loquitur is Latin and literally means the thing speaks for itself. In the context of a legal claim based on negligence, res ipsa loquitur essentially means that the circumstances surrounding the case make it obvious that negligence occurred. however it is not a defebce for neglligence. Hence the correct option is a.