Hello. I am struggling to answer this question for my Microeconomics ECO 110 class. Any help answering this question below so I understand for future reference would be a great help. This class is also open notes so there is no book references. Thank you again for the time and effort to help me.

1. In class we talked about some "symbiotic" partnerships in which a business provided a free good (e.g. the bar providing for the lighthouse). Can you think of any other "free" things that businesses support? Why might they do that?