The correct answer is D) sentence structure.
In a sentence, there are three basic elements: the subject, the predicate, and sometimes the direct or indirect object. There are a few simple rules that govern the construction of a sentence, but they are strict. It is necessary to have a subject, a predicate, and an object (in that order) in every sentence.
In addition to that, we may also include prepositions and dependent clauses in our sentences. The elements of sentences can be woven together more complexly as they progress.
In general, there are four types of sentence structure:
• Simple
• Compound
• Complex
• Compound-complex
Hope this helps :)
