Your question is Command Line Basics. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
Tell me about how you use the command line, including what cd and ls do. Please describe your practical experience navigating directories, inspecting files, and locating data or scripts from a terminal. Explain how you would use these commands in a data-analysis workflow, and mention how you handle uncertainty or mistakes. We are looking for a clear, hands-on explanation rather than memorized definitions.