Before the browser can render the page, it needs to construct the:

Before the browser can render the page, it needs to construct the:

1:-Pixel pipeline

2:-DOM and CSSOM trees

3:-UX trees

4:-HTML and JavaScript

Before the browser can render the page, it needs to construct the:

Correct answer is:

DOM and CSSOM trees

Explanation: Before the browser can render the page, it needs to construct the DOM and CSSOM trees. As a result, we need to ensure that we deliver both the HTML and CSS to the browser as quickly as possible.