Napolean suffered a defeat in the hands of the Duke of Wellington. So A. is your answer. Hope this helped!
~Shadow
Connecting past and present helps you see how humans have chosen to deal with conflict, which can lead to war, political debate, neighborhood riots, discrimination, etc. But also linking past and present helps us see how humans have solved any problems they have come across. Whether it be an economic issue, something that effects many people, or a personal issue.
The most ethical response if an experiment fails to confirm a hypothesis is to revise the hypothesis and develop a new experiment to test it. The correct answer is A.