The concept of "relationship" is vital for which purpose ?
Determining the legal connections between these parties.
Establishing liability and apportioning responsibility among the parties.
To have a idea of fiduciary relationship shared by the parties.
Both (a) & (b)
Joint liability in tort law arises when two or more parties are held collectively responsible for causing harm or injury to another person. The concept of "relationship" is vital in determining the legal connections between these parties.It plays a crucial role in establishing liability and apportioning responsibility among them. Hence, option (d) is correct.