If you want to best predict the topics that might appear on a test, it is best that you use all the available sources, that is, that you use class discussions (inlcuding questions to the teacher), textbook and if you have access to, all previous assignments of the teacher.
So the best answer is: d. all of the above.
Before WWII Germany was granted some of their wants, and this was called appeasement. Appeasement was done because the Allies thought that if they gave in to some of their demands, it would keep Germany from doing anything major, such as war. The biggest concession was to allow Germany to take over the Sudetenland, which was in Czechoslovakia but inhabited by native German speakers that wanted to be allied with Hitler.
Answer:
Sugar cane, cacao, and bananas (tropical crops)