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Answer:
Firm is the producer of goods and service, markets is the place where goods and services are sold or bought and factors are input in an organization used to produce goods and services.
Explanation:
A firm is an organization that sell goods and services in a market while market is a place where goods and services are sold.
Factor are the essential input used for producing good and service by an organization. These factors are labour, capital and land
The correct answer should be B. decreased immigration
Immigration was not decreased, it was high and therefore people needed more land and they expanded.
The Irish Potato Famine caused a mass, panicked human migration out of Ireland when entire harvests of potatos (a staple food) were wiped out.
