Final answer:
Teenagers are the most receptive to product placements and branded entertainment.
Step-by-step explanation:
Of the provided age groups, teenagers are generally considered to be the most receptive to product placements and branded entertainment. Research suggests that teenagers have a significant influence on their parents' spending and tend to have a higher level of disposable income earned from part-time jobs. This makes them a prime target for marketers. Furthermore, the media and entertainment industries often tailor their products, such as music and movies, to appeal specifically to teenagers.