Answer:
B a textbook would be an example of a medium. Mediums are the way that a piece of writing is delivered to the reader meaning that a textbook is the only clear example of a medium there.
Answer:
this game is like iq so everyone's plays it
The answer is 4 because you can put it this way 8-4!=4 or you can do it with fingers like☝☝☝☝☝☝☝☝-☝☝☝☝=☝☝☝☝