Okay so I'm not sure exactly if this is talking about primary or secondary sources, but if it is then I'm fairly certain that this would be a secondary source since the student wasn't there to witness it, they're relying on their research to give them information.
Answer: When an agreement in price has been reached
Explanation: The best stage to ask such question is when both Morris and delis supermarket has reached an agreement in price of the new machine. The first stage of discussion is
1. Identification of the machine, if it actually replaces the the old machine and it can perform the same operation as the old one.
2. After identification, the next stage is price negotiation, the price or the machine must reach an agreement before a schedule delivery can be put in place.
The Answer Would Be "B" .
It Would List All Specific Industries .
