The pip freeze command is used to output installed packages in the current environment and their versions. The > operator redirects this output to a file, in this case, requirements.txt. pip freeze: Outputs the list of installed packages and their versions. Redirection: The > operator is used to redirect the output to a file. Option B is correct as it uses the > operator to redirect the output of pip freeze to requirements.txt. Reference: Python Packaging Documentation: Using Pip Freeze