The language system that most likely broke down in the
following sentence is syntax.
<span>In linguistics, </span>syntax<span> is the set of rules, principles, and processes
that govern the structure of sentences in a given language, specifically word
order.</span>
The correct answer between all
the choices given is the third choice. I am hoping that this answer has
satisfied your query and it will be able to help you in your endeavor, and if
you would like, feel free to ask another question.
The answer is D) a predicate
It would be drifting off topic following a pattern writing a strong topic sentence.