Which of the following demonstrates best practices for designing mobile ad creative?

Adding closed captions is a best practice for mobile ad creative because most users consume mobile content with the sound off. Captions ensure your message is still conveyed effectively, reaching a wider audience and improving comprehension. While using Redditisms like 'TIL' can be engaging, it's not a universal best practice for all ad creatives and might not resonate with all audiences. Including your brand logo is important for brand recognition but doesn't directly address mobile consumption habits. Using only carousel ads is a format choice, not a universal best practice for all mobile creative, as other formats like video or static images can also be highly effective depending on the campaign goals.