A is going to be you answer.
Many African Americans struggled in the years after the civil war.
A producer might attempt to demand create for a product because they may be out of business or they want more income
Yep thewintershoulder is right. there might be more.
In tracking the US economy and determining consumer spending levels an item that might be included would be Harry Potter books sold in bookstores. The other examples are costs incurred by businesses in producing goods or services, whereas the books are solely a consumer purchase.