A characteristic or example of earned media is:

a company's website.

product information conveyed via personal selling.

advertising placement in the Super Bowl (premier American football programming).

a viral campaign.

The correct option is advertising placement in the Super Bowl (premier American football programming)

Explanation:

Earned media is the media channel gained through efforts of promotions rather than gained using promotional tools.

A company website is tool with which to reach targeted audience rather than being a channel of media acquired through promotional efforts, hence that option is obviously wrong.

Same applies to a viral campaign using social media as tool to reaching targeted would-customers.