Question: What is the best way to explain what this script does?

1. This script times out the session for myusername.
2. Cookies are starting to be stored as a result of this script.
3. This script validates the username and password.
4. This script is on a page that requires the user to be logged in. It checks to see if the user has a valid session.

Answer: The correct answer of the above question is Option D:This script is on a page that requires the user to be logged in. It checks to see if the user has a valid session.