Of these charts, which title most reinforces the theme of your presentation? (remember, you want to support the view that tv viewers increasingly expect an interactive, engaging experience that involves using their mobile phones.)
The answer would be Line Chart #1. Since this chart comprises an expressive title that captures the quintessence of the data showed. The short title “The Rise of Connected TV Viewers” directly and precisely sums up the opinion of the chart and your demonstration. The subtitle enhances an additional thought about what establishes a connected TV viewer.