Is a form of warehousing that combines classic warehouse operations with light manufacturing and packaging duties to allow firms to put off final assembly or packaging of goods until the last possible moment.
a) postponement
b) a hub-and-spoke system
c) assortment
d) spot stock

Postponement  warehousing,

Explanation:

Postponement  warehousing, is form of warehousing that combines  classic warehouse operations with light manufacturing and packaging duties to allow firms to put off final assembly or packaging of goods until the last possible moment.

hub and spoke, consists of one hub (central location), at which the warehouse is located and it is transported to different locations through routes called spokes.

assortment is a form of warehouse in which a wide array of goods are held close to the source of demand to ensure short lead time.

spot stocking refers to company's goods stocked in a small warehouse for easy access. Often done seasonally.

you're crazy if you think that someone is going to write a 500 word report for you.

the answer would be voluntary exchange -

"the act of buyers and sellers freely and willingly engaging in market transactions. moreover, transactions are made in such a way that both the buyer and the seller are better off after the exchange than before it occurred."

hope this : )

-shy