Final answer:
To improve your clickthrough rate, you may want to optimize your ad for mobile devices.
Step-by-step explanation:
To improve your clickthrough rate, you may want to optimize your ad for mobile devices. Mobile optimization is crucial in today's digital age as more and more people are accessing the internet through their smartphones and tablets. By ensuring that your ad is mobile-friendly and responsive, you can increase the likelihood of users clicking on your ad. To improve your clickthrough rate, which is a metric that measures how often people who see your ad end up clicking it, you may want to choose the option that optimizes the performance of your ad. A higher clickthrough rate indicates that your ads are relevant and appealing to the people who see them. Therefore, the correct answer is c) Optimize your ad for mobile devices. Nowadays, many users access the internet on their mobile devices, and ensuring that your ad is well-optimized for mobile can drastically improve user experience and consequently your ad's clickthrough rate. This includes having a mobile-friendly layout, fast-loading content and easy-to-click links. In contrast, decreasing the relevance of your ad copy, using generic keywords, and ignoring ad performance metrics are practices that would likely harm your clickthrough rates and diminish the overall effectiveness of your ad campaigns.