Tina is writing an article for her school website about how World War II began. She conducted some research and used the information she found to write the following paragraph for her first draft.

Germany invaded Poland on September 1, 1939, and Britain and France declared war soon after. Soon the Axis Powers included Germany, Italy, and Japan. On the other side were the Allied Powers, which included France, Great Britain, and the United States.

Which of the following organizational strategies would BEST help Tina reorganize her ideas and information to focus on the war’s beginning?

A. comparing the different types of weapons Germany and Poland had
B. explaining the effects of Germany's invasion of Poland
C. classifying the countries according to whether they were Axis Powers or Allied Powers
D. contrasting the reasons why Britain declared war with why France declared war