What does the term root directory mean?

What is special about a file named index.html?

True or False: It is okay to have subfolders within the main folder of a website (the root directory).

How would you write the file path for a file named about.html inside a subfolder named pages?

In a file path, how do you indicate a move up a folder level?

True or False: There is no limit to how many subdirectories may be placed within the root directory of a website.