Answer:
Annie Dillard opens her essay with a factual and objective style.
Step-by-step explanation:
She uses this approach because she wants to write about specifics topics using considering the facts and evidence. This approach gives her essay a more objective and professional tone. It can include clarity and economy of writing, due to this it is good for exposing the opinions, interpretations, points of view...
Using this approach her essay will be more focused on the topics and more concise so it can emphasize the topics of her essay. In the opening, this approach will be useful for the deliberation of the thesis. Using factual and objective style gives the essay a good basis to write the topics.