Choice A is the best answer because it most accurately states the main idea of the text. The text describes the book Vibration Cooking: or, the Travel Notes of a Geechee Girl as Smart-Grosvenor’s “most influential project” and as “unusual for its time.” The text also notes that the book and author have influenced contemporary approaches to writing about food and cooking. Therefore, the text mainly conveys that Vibration Cooking: or, the Travel Notes of a Geechee Girl is an unconventional and important contribution to food writing.

Choice B is incorrect. Although the text mentions that Smart-Grosvenor worked in national public television and radio and was a food writer, these details aren’t the main focus. Rather than focusing on Smart-Grosvenor’s various jobs, the text focuses specifically on one specific book she wrote. Choice C is incorrect. Although the text suggests that Vibration Cooking: or, the Travel Notes of a Geechee Girl was groundbreaking, it doesn’t suggest that the book didn’t receive praise when it was published. In fact, the text states that the book is “long admired.” Choice D is incorrect because the text states that Smart-Grosvenor was a culinary anthropologist and that her book influenced later approaches to food writing but doesn’t indicate that Smart-Grosvenor or her book influenced people to begin cooking for themselves.