Firefighters is a company that manufactures smoke detectors. it runs a newspaper advertisement that reminds people of the need to have a smoke detector on every floor of their house. in the advertisement, the company also asks people to think about this the next time they're in the smoke detector section of a hardware store. according to the information provided here, this is an example of
a. direct response advertising.
b. private label advertising.
c. primary demand stimulation.
d. selective demand stimulation.