What is a script?

A script is best defined as a text file that contains instructions written in a programming language, often intended for execution by an interpreter. Scripts are typically used to automate processes, perform calculations, or manage systems and they are usually written in high-level languages like Python.

This makes option C the correct choice, as it accurately describes a script's nature and purpose. The instructions within the script can include various commands and functions that the interpreter executes in a sequential manner.

In contrast, a compiled program refers to a program that has been transformed from source code into a machine-readable format through a compiler, which is not the case for a script. A binary file is a file that contains data in a format that is not intended to be read as text, which differs from the clear textual format of a script. A comment in the code is simply a note for the programmer and does not contain executable instructions, thus not representing a script either.