Final answer:
The advertiser would likely choose newspapers for their advertising needs due to their flexibility, timeliness, good local market coverage, broad acceptability, and high believability.
Step-by-step explanation:
If an advertiser desires flexibility, timeliness, good local market coverage, broad acceptability, and high believability, the suitable choice among the mass media types would be newspapers. Compared to other mass media like television, direct mail, and radio, newspapers have the ability to deliver timely updates with the flexibility of reaching specific local markets effectively. They are broadly accepted and are often seen as more credible sources of information.
In the context of historical effectiveness, newspapers have navigated through technological changes by integrating with social media platforms, which can add to their timeliness and market coverage. On the other hand, despite their ability to target certain demographics effectively, radio and television have seen declines in advertising effectiveness due to technological advancements like consumer's ability to skip ads. Overall, newspapers provide a stable ground for advertisers looking to maintain believability while reaching a broad and locally targeted audience in an adaptable and timely manner.