Answer:
b. Mediator
Step-by-step explanation:
Mediator -
It is referred to as the third party .
The work of a mediator is to set the deal between two parties in a peaceful manner , is referred to as a mediator .
The mediator sets the deal with the agreement of both the parties and is given certain amount to set the deal properly .
The main focus of the mediator to avoid any confusion or conflict .
Hence , from the given scenario of the question ,
The correct answer is mediator .