Which choice, assuming they are all true, would most logically introduce the final paragraph?

F. These results convinced Reed that yellow fever was spread by mosquitoes, and not by contact with contaminated materials.
G. A memorial was built in honor of the volunteers who helped advance the cause of science.
H. Reed died within a year of making these discoveries, but his contributions to medicine will never be forgotten.
J. Major Walter Reed not only was crucial to the eradication of yellow fever, but he performed research on typhoid as well.