Which practice would be acceptable under Google’s editorial and technical requirements?

Which practice would be acceptable under Google’s editorial and technical requirements?
§  Including a generic phrase like “Buy products, click here”
§  Linking to a site that’s under construction
§  Showing a URL that doesn’t accurately indicate the landing page, such as “google.com” taking people to gmail.com
§  Promoting documented copyrighted content
The correct Answer is:

§  Promoting documented copyrighted content