The system of rules and structure which governs language is generally referred to as: C. grammar.
<h3>What is language?</h3>
A language simply refers to a structured system of communication through which living organisms, especially humans share information among themselves, especially through the use of spoken words and sounds.
In English language, grammar is the system of rules and structure which governs the use and composition of language.
Read more on language here: brainly.com/question/781903
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A source is where you can look to find info. Multiple means many or some.
Therefore, a multiple source test is a test that you can find the answers in multiple sources, such as a book, article, journal, etc.
I would say strong use of multimedia.