Legal Principle: Negligence is the breach of a duty caused by an omission to do something which a reasonable person would do or an act which a prudent and reasonable person would not do. An action for negligence proceeds upon the principle that the person has an obligation or duty on the part of the defendant, which he/she breaches, leading to damage.Factual Situation: A, a surgeon operated on B. Subsequent to the operation, B complained of pain in his abdomen. On examination, it was discovered that A had left a mop in B's stomach while operating. (NLU DELHI 2010)

Each question consists of legal principle(s) (hereinafter referred to as 'principle') and facts. Such proposition may or may not be true in the real and legal sense, yet you have to conclusively assume them to be true for the purposes of this section. You have to apply the principles to the given facts to arrive at the most reasonable conclusion. Only one of the alternatives, i.e., (A), (B), (C), or (D) is the most reasonable conclusion. Remember: you must not rely on any principle except the principles that are given for every question.