Which of the following is considered the least costly mass media resource for advertising?

Blogs are considered the least costly mass media resource for advertising because they typically require lower production and distribution costs compared to traditional media like television, print publications, and radio. Unlike television ads, which involve higher expenses for filming and airtime, and print publications that incur significant costs for printing and distribution, blogs can be created and published online with minimal financial investment.

Additionally, blogs often allow for flexibility in content creation and can reach a broad audience through the internet without the need for substantial advertising budgets. Marketers can leverage organic reach through SEO, social media sharing, and direct engagement with readers, making blog advertising an effective and budget-friendly option.

In contrast, radio spots require payment for airtime, and while sometimes more affordable than television, they still involve production costs. Print publications can become quite expensive depending on the publication's circulation and audience reach. Thus, blogs stand out as a cost-effective advertising medium.