Assertion. Scripts play an important role in dynamic web pages.

Reason. Scripts are embedded codes within web pages, that execute at the client's browser and make the web page look different.

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R is not the correct explanation of A.
3. A is true but R is false.
4. A is false but R is true.

Both A and R are true and R is the correct explanation of A.

Explanation
Scripts play an important role in dynamic web pages as they are responsible for displaying different data depending on information such as the time of day, the logged-in user, the date, and the search term used. These scripts are embedded codes within a web page that execute on the client's browser, making the web page look different.