4. Why might Roosevelt have asked the experts in his Brain Trust to help him create solutions in their particular fields? A. Because some of the members of his Brain Trust were experts in manufacturing, Roosevelt thought that they would be able to help the country build more tanks and airplanes. B. Because the experts knew a lot about their own fields, Roosevelt thought that they would be good at figuring out solutions involving their fields. C. Because the members of his Brain Trust included women as well as men, Roosevelt thought that they would be able to give balanced advice to Americans. D. Because the experts all had their own areas of specialty, Roosevelt thought that turning to them would keep any one field from becoming too powerful.