The answer would be D- Vary the sentence structure
When you vary the sentence structure it allows for the main points to be emphasized
If you use long sentences too much, you can make your essay seem like the points are jumbled together.
When you use simple sentences to much it can make the information seem rushed.
However, when you use a mixture of compound sentences, simple sentences, complex sentences, and compound-complex sentences, your information can flow smoothly. You'll also be able to emphasize your main point when you do this.
