Clearly, we are on the threshold of yet another revolution. human knowledge is doubling every ten years. what is the meaning of the underlined term? battle or mutiny change or transformation type of rotation style of leadership

change or transformation is the answer to this :)

The answer is B: change or transformation

 The part "another revolution" indicates that there have been other revolutions before: Industrial Revolution, French Revolution etc. Revolution in these cases means a change in the way people do things or the way a country is governed. Another meaning for revolution is a circular movement. Also, it can mean a rebellion or revolt.

its the first one

explanation:

think about it the answer is in the first paragraph

anyone who was dealing with communism in soviet union in his time had an ideal picture of equality, freedom, the struggle of the working class for a better future, the success of the aristocracy's overthrow and the emancipation of subjugation.   however, anyone who would go to soviet union to see the functioning of the communist system, would be convinced that it was about sad people, about everyday bad life, about the brutal attitude of communist leaders, about ill obsession to completely exterminate every thought on aristocracy. thus, orwell wanted to show all the absurdity, the brutality of the system, the unbearable rule of suspicious morality, the ignorant people who try to play professionally.

the answers are: b. and e.