Retailers can target their customers more effectively by using only a single channel to reach them

Which of the following is an example of a specific purpose for a communication?

A) "Let's set up a meeting next week to discuss staffing." B) "I would like to set up a meeting Tuesday at 10:00 to get approval to hire an addition to staff." C) "I would like to talk to you about our staffing shortage." D) "Are you free to meet on Tuesday for a while?" E) "I would like to hire a few more people. When are you free to talk?"

Professor Albert advises his students to purchase the book Microbiology by Pelczar, to acquaint themselves with the fundamentals of microbiology. What role does he play in the buying decision of his students?

What will be an ideal response?