Afirm that offers outsourcing solutions is called a provider.

water and oil do not mix because water is hydrophilic (it is attracted to itself) and oil is hydrophobic (it is repelled by water).

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