D. Topic sentence
Topic sentences are related to the thesis statement, or main argument of the essay, and are supported throughout body paragraphs.
Reading isn't "reasonably' strong or solid ;)
Answer: The answer to this question is d), " to help the reader understand the central idea." Supporting details are used and extracted from the text to support the central idea or main point, especially if writing an essay. Hence, supporting.
Jacob was born and raised in Florida, but he ships off to Cairnholm Island to search for Miss Peregine's home for peculiar childeren.
Please make brainliest answer :^)