Which statements about programming languages are true?

The chosen statement emphasizes the unique role of programming languages in providing clarity and precision that is often lacking in natural languages. Natural languages can be ambiguous, with words and phrases that might have multiple meanings based on context. This ambiguity can lead to misunderstandings, especially when it comes to instructions for machines.

Programming languages are designed specifically to eliminate such ambiguity, allowing programmers to convey precise instructions to computers. Each command or statement in a programming language has a specific meaning and follows strict syntax rules, ensuring that the instructions are interpreted consistently and correctly by the machine.

The other options contain inaccurate or misleading assertions. While the number of defined words in a programming language is indeed much smaller than that of natural languages, the suggestion that the number of words is comparable is incorrect. Furthermore, programming languages aim for single interpretations of commands to avoid issues of miscommunication, rather than having many possible interpretations, which is characteristic of natural languages.