he could've either made the slides more clear so there wouldn't be as many questions or he could've asked everyone to save their questions until the end. They could have written them down on post-it notes so they wouldn't forget the questions.
It can be deduced from the given that what Mario used as payment for the goods that he acquired is also goods. The answer to this item is commodity. It is a type of money that is not in a form of cash but has a value that can be an exchange for another commodity.
