Answer:
I would say, from researching this question and understanding the concepts of objective summary, that the best answer choice to the question: Which sentence is an example of an objective summary from Cynthia Crossen´s "A Culinary Wasteland", would be: D) Taking individual responsibility for one´s impact on the global economy is far more complicated than just saying no to fast food, as Mr. Schlosser advises.
Step-by-step explanation:
The reason for this being the best answer from all the ones offered is that the sentence encompasses in the best way what Eric Schlosser wished to impress upon readers of his book "Fast Food Nation" but with as little influence from the individual views and position from Cynthia Crossen, which are expressed in her article "A Culinary Wasteland". In this option choice, Crossen is able to show objectivity and offer a true summary of points of Schlosser´s book, with the least possible influence from Crossen´s views. The other choices are not enough of a summary and much less objective.