The cd command "changes directory" to move into a directory. But how do you move back out of the current directory?
The answer is two dots: ..
.. is a special alias that refers to "the parent directory". It's a shortcut that you can use to move up one level in the directory tree.
Navigate back out of the worldbanc directory so that you're in its parent directory. If you're in the top level of the worldbanc directory, just type:
cd ..
Then run the ls command again, but pass in the name of the worldbanc directory as an argument to list its contents from the parent directory:
ls worldbanc
Paste the output into the input box and submit your answer.