What is a digital brief?

A multi-device strategy, focusing on how mobile web and mobile app can be integrated into each dynamic creative
An article that indicates the number of dynamic creative iterations based on the negotiated terms and conditions
A document that covers a media plan, with the campaign goals and method to execute
A sample of sketches of creative designs and logos, covering multiple ad formats

The correct answer is:

A document that covers a media plan, with the campaign goals and method to execute.