phillips's led (light emitting diode) lighting uses comparative advertising to emphasize the benefits of using leds over cfls (cathode filament lamps). the advertisements emphasize that phillips's leds cost less than cfls and other brands of leds, last longer, consume less energy, and need to be replaced less frequently than cfls. in this scenario, which of the following advertising appeals is used in phillips's ads? a. profit b. fun and pleasure c. admiration d. vanity and egotism
