A. Computers.
People find the research and store it on documents and internet so it is A. Computers.
the correct answer is D
by moving and refuting the counterclaim at the end
by providing a contradictory statement in the conclusion without offering a counterclaim the authors views are rendered unreliable because he seems to contradict himself. A conclusion to a topic should be used to reaffirm the main idea and not to contradict it.
The relationship between Japan and the United States had soured in the years leading up to Pearl Harbor. This began with the Japanese invasion of Manchuria in 1931, an expansion throughout the Chinese mainland that led to the Second Sino-Japanese war between China and Japan in 1937.