Why does the writer say most American TV commercials succeed in achieving their main aim

A．The man was in class yesterday but the woman went to Shanghai.
B．Both the man and the woman were in class yesterday.
C．The man wasn’t in class yesterday but the woman was.
D．Neither the man nor the woman was in class yesterday.

A．The two businessmen were confident.
B．The guests left the room because they didn’t like the two businessmen.
C．Both the businessmen made fool of themselves because they didn’t know Shakespeare.
D．Shakespeare was a kind of cheese.