Read the text below and answer the question. There's only one correct answer. Emily was walking her dog in the park when she slipped on a wet patch of grass that had not been marked with any warning signs. The park management had been informed about the slippery conditions days earlier but failed to take any action. As a result of her fall, Emily suffered a broken wrist and incurred medical expenses. She is considering filing a lawsuit against the park management for negligence. Question: Which head of tort is most applicable in Emily's case?