What is the definition of a macro in programming?

The definition of a macro in programming is best described as a single instruction that expands to perform tasks. This refers to a set of instructions that are represented by a shorthand command. When the macro is executed, it expands into the code that carries out those tasks. This is particularly useful for automating repetitive actions in programming or software applications, enhancing efficiency and reducing the chance of errors from manual entry.

In contrast to the other options, which describe different programming concepts, the notion of a macro focuses on simplification and automation of complex tasks through a single entry point. A function that performs only one action, for instance, does not represent the broader capabilities of a macro. A debugging method addresses finding and resolving faults in code, which is a separate concern from the automation of task sequences that macros provide. Similarly, a loop that iterates through a data set pertains to control structures in programming rather than the macro concept itself. Thus, the definition highlighting a macro as an instructive shorthand that expands into detailed operations is the most accurate and relevant.