Identify the sentence that has correct sentence structure. a. a high-protein diet allows the dieter to eat unlimited amounts of meat but eating very little in the way of vegetables or starches. b. having to have the house appraised by an independent appraiser before we were able to get financing. c. a bactrian camel has two humps, while a dromedary camel having only one. d. nearly all retail stores have created an online presence that allows their products to reach a wider audience.