Final answer:
TrueView for action is a skippable in-stream video ad format that uses either target CPA or Maximize conversions bidding strategies to encourage user action.
Step-by-step explanation:
TrueView for action is a skippable in-stream video ad format designed to encourage users to take actions that are valuable to businesses, such as signing up for a newsletter or purchasing a product. These ads use conversion-based bidding strategies, such as target CPA (Cost Per Action) or Maximize conversions. Target CPA is a bidding strategy that sets bids to gain as many conversions as possible at the target cost per action specified by the advertiser. Alternatively, Maximize conversions automatically sets bids to get the most conversions for your campaign while spending your budget.