What constitutes a joint tort-feasor?

A joint tort-feasor refers to multiple individuals or entities who contribute to causing the same injury or harm to a third party. This concept is crucial in tort law, as it recognizes that more than one party can share responsibility for a single event or outcome that leads to damages. In scenarios involving joint tort-feasors, each party can be held jointly and severally liable, meaning that a claimant can pursue compensation from any one of the responsible parties for the full amount of damages, regardless of their individual degree of fault.

In contrast, having just one person liable for an injury pertains to a singular tort-feasor scenario and does not encapsulate the joint liability aspect. A company being responsible for damages or a witness to a tort also does not align with the definition of a joint tort-feasor as it either indicates a single entity's liability or a person who merely observes the tort, respectively. Thus, the correct choice emphasizes the shared nature of liability among multiple parties contributing to the same injury.