What is it that the App shell helps with

What is it that the App shell helps with

• Creating a fully optimized site
• Improves elements of the UX
• Making the full page load faster
• Making transitions between pages faster

Correct answer is:

• Making transitions between pages faster

Explanation: An application shell is the minimal HTML, CSS, and JavaScript powering a user interface. The application shell should:

• Load fast
• Be cached
• Dynamically display content

Read more here: https://support.google.com/partners/answer/7336597