What is the name of the file that contains the source code?

The correct answer is the source file. In programming, a source file is a file containing the human-readable code written in a programming language, such as Python. This file includes the instructions and logic that a programmer writes to create a program. Source files typically have specific extensions, such as .py for Python files, which indicate the type of code contained within.

By contrast, executable files are compiled forms of code that can be run by an operating system without user intervention, while data files generally store data but do not contain the instructions needed to perform tasks in a programming language. Script files can also refer to files that contain scripts written in languages like Python; however, the term "source file" is more specific and widely recognized to refer to files containing the actual code that a programmer writes. So, the term "source file" most accurately describes the file containing the source code.