Diction and syntax are precise; the writer has considered the reader's understanding.
Things to consider and ask yourself about the clarity of your writing:
- Read your essay out loud--do you or your listener hear any unclear or awkward sentences?
- Is the essay's word choice unclear or inappropriate in any places? (If you have used a Thesaurus, be especially careful--those choices may possibly be inappropriate.) You know what you mean--will your reader?
- Are grammar, spelling, and mechanics correct?