You're making a video ad with the goal of driving reservations for a tourism company on their website. Which of the following call to actions (CTAs) should you use in the ad?

The selection is correct because "Book now" is the most direct and relevant call to action (CTA) for a tourism company seeking to drive immediate website reservations, as it precisely matches the user's intended final action. In a Video Action Campaign, the CTA serves as a critical instructional signal that bridges the gap between viewing and converting; while "Learn more" or "Take a look" are softer, consideration-phase prompts, "Book now" explicitly signals a transactional intent. Using a high-intent CTA ensures that the users who click are those further along in the decision-making process, thereby improving the campaign's conversion rate and helping the bidding algorithm optimize for the specific goal of securing bookings rather than just general traffic.