The correct answer is: examine their emotional response.
The step people should take first after viewing a commercial for a product is to examine their emotional response. This means reflecting on how the commercial made them feel and considering whether it connected with them on an emotional level. This is an important step because emotions play a crucial role in influencing our decision-making process. By understanding our emotional response, we can better evaluate the effectiveness of the commercial and whether it aligns with our needs or desires. Examining our emotional response helps us to be more mindful and conscious consumers, rather than making impulsive decisions solely based on visual aesthetics or background music.