The answer is "Marketing stimuli".
Stimuli refers to any materials or things which are used to provoke respondents in a market research setting. Stimuli might be physical, (for example, an item) or sound/visual, for example, a film or site.Stimuli are for the most part visual, sound-related, composed or material and are utilized to expand customary interviewing methods, planning to guide respondents to concentrate on the key research point with no verbal or direct inciting and to request a response.
