If your site has consistently poor Total Blocking Time scores, which approach should you take to improve this metric?

Remove all videos from your site that are 1MB or larger
Optimize images and use srcset and sizes attributes to provide the browser multiple image options depending on the user’s device
Self-host fonts instead of fetching them from a third party
Reduce the total amount of JavaScript loaded on your site while also efficiently loading the site’s JavaScript

The correct answer is:

Reduce the total amount of JavaScript loaded on your site while also efficiently loading the site’s JavaScript