In which case will the defendant be liable for the tort of negligence?

While driving her car, Louise, without warning, has a heart attack that causes her to lose control and crash into another vehicle. She has no history of heart disease and is only forty years old.

Diane throws a baseball intending to hit her brother and strikes a passerby. Derwin takes medication that he knows causes drowsines. at the maximum dosage. Derwin takes this dose prior to flying his aircraft. His lack of alertness causes a crash in which a passenger is injured.

While playing golf, Dee swings a club on the fairway. Because of a design defect, the head of the club flies off and strikes a fellow golfer standing $20$ yards away.