Which of the following situations does not support a negligence suit?

Todd, a three year old, is injured when he picks up a knife left on the floor by a babysitter.

Kelsey's house burns down when Carl carelessly tosses a lit cigarette into a pile of leaves next to her home.

Kevin's car is damaged when Mary hits it from behind because she was not paying attention.

Stacey loses her life savings when Peter, a financial planner, advises her to invest in a very shady company.

At the grocery store, Jack slips on a spill carelessly left by an employee and is unharmed.