Question

how have public service campaigns changed over time?
advertisers have integrated new media and technologies.
sponsors have begun to sell access to the media that are used.
the government has begun to sponsor public service announcements.
researchers have learned to use new types of appeals and arguments.

Explanation:

Public service campaigns have evolved primarily by adopting new digital and interactive media platforms (like social media, streaming services, and targeted digital ads) alongside traditional channels, which aligns with integrating new media and technologies. Government sponsorship of PSAs is not a new change, selling media access is not a core evolution of the campaigns themselves, and while appeals have adapted, the most defining broad change is media/tech integration.

Answer:

A. Advertisers have integrated new media and technologies.