Identify three common traditional marketing methods.

The selection of billboard, newspaper, and mail as common traditional marketing methods is appropriate because these methods have been utilized for decades and are deeply rooted in conventional advertising practices. Billboards are large outdoor advertisements that reach a wide audience, especially in high-traffic areas, making them effective for brand visibility. Newspapers offer a tangible medium for reaching local audiences, and they often include promotional content that can engage specific demographics. Mail, particularly direct mail, allows businesses to send targeted advertisements directly to potential customers' homes, facilitating a personalized approach to reaching an audience.

In contrast, social media, email, and websites are integral to digital marketing strategies, emphasizing online engagement. Similarly, digital ads, SMS, and PPC refer to various forms of online advertising, which differ significantly from traditional methods. The last option focuses on digital strategies such as social media, influencer marketing, and SEO, which again are not categorized as traditional marketing but rather as part of modern digital marketing. Thus, the selected response accurately reflects traditional marketing techniques.