Renaming a file or folder using the 'rename()' method

To rename a file or folder, the 'rename()' method is used. This method allows you to change the name of a file or folder to a new name of your choice.

Explanation:

The 'rename()' method is a function provided by programming languages and operating systems to modify the name of a file or folder. When using this method, you provide the current name of the file or folder, as well as the new name that you want to assign to it.

Here is a step-by-step explanation of how to use the 'rename()' method to rename a file or folder:

1. Identify the current name: First, you need to know the current name of the file or folder that you want to rename. This could be the full path to the file or folder or just the name if it is located in the current directory.

2. Choose a new name: Decide on the new name you want to assign to the file or folder. Make sure the new name complies with any naming conventions or restrictions imposed by the operating system or programming language.

3. Use the 'rename()' method: Call the 'rename()' method and provide the current name and the new name as arguments. The method will then update the name of the file or folder accordingly.

4. Verify the renaming: After calling the 'rename()' method, you can verify if the renaming was successful. You can check if the file or folder with the new name exists in the desired location.

Example:

Here is an example of how to use the 'rename()' method in Python to rename a file:

```python
import os

current_name = 'old_file.txt'
new_name = 'new_file.txt'

os.rename(current_name, new_name)
```

In this example, the 'rename()' method from the 'os' module is used to change the name of the file 'old_file.txt' to 'new_file.txt'. After executing this code, the file will be renamed accordingly.

Conclusion:

The 'rename()' method is the correct option (D) for renaming a file or folder. This method is available in various programming languages and operating systems, allowing you to easily change the name of a file or folder to a new name of your choice.