The correct answer is A. The essay needs more supporting facts or examples.
Step-by-step explanation:
In writing, the word "elaboration" refers to providing and explaining your ideas as well as adding more details to developed a topic or subject in a text. This means if you are asked to provide more elaboration in an essay or any other text is because your teacher finds the details and ideas provided are not enough and more support is needed usually by adding details such as examples, statistics, quotations, facts or other that act as a support for the thesis statement. Therefore, if a teacher asks a student to provide more elaboration in an essay it basically means the essay needs more supporting facts or examples, while others elements such as grammar, length of the essay or the points already included do not need to be changed.