What is the basis for determining whether a newspaper is considered part of the mainstream media?
O A. The cost to read it online
O B. The number of color advertisements it has
C. The cost to deliver hard copies to residences
D. The number of people who read it

i honestly speaking this is too long

by using  production possibilities graph.  opportunity costs are key expenses in financial matters and are utilized as a part of registering money saving advantage investigation of a venture. such expenses, be that as it may, are not recorded in the record books but rather are perceived in basic leadership by processing the money costs and their subsequent benefit or misfortune.