Explanation:

Python is a high-level programming language that can be used for various applications. Python programs can be written in the script mode and saved as files. These files can then be executed using the Python interpreter.

The correct answer to the given question is option 'B', which means that a Python program can be saved as a file and then run using the file.

Here are the reasons why:

Script Mode:

Script mode is a way of writing Python code in a file that can be executed later. In script mode, the code is written in a text editor, saved as a file with a .py extension, and then executed using the Python interpreter.

Saving the Script:

Once the Python code is written in the script mode, it needs to be saved as a file. The file should have a .py extension to indicate that it is a Python script.

Running the Python Script:

To run the Python script, we need to use the Python interpreter. The interpreter reads the Python code from the file and executes it. There are different ways to run a Python script:

- Using the Command Prompt or Terminal:
We can open the command prompt or terminal and navigate to the directory where the Python script is saved. Then we can use the command "python scriptname.py" to run the script.

- Using an Integrated Development Environment (IDE):
IDEs such as PyCharm, Spyder, and IDLE provide a graphical interface to write, save, and run Python scripts. We can use these IDEs to create and execute Python scripts.

Conclusion:

In Python, a program can be written in the script mode, saved as a file, and then run using the Python interpreter. Therefore, the correct answer to the given question is option 'B'.