Select the text from the paragraph that best helps you understand that exigency means
pressing need. There may be more than one correct choice.
While most scientific findings are the result of deliberate and carefully designed
experiments, occasionally a major discovery happens in a more fortuitous way. One
such example is the discovery of penicillin in 1928 by the Scottish bacteriologist
Alexander Fleming. After working as a field doctor during World War I and
witnessing how many soldiers died needlessly from bacterial infections, Fleming
recognized the exigency of finding a chemical that could fight these afflictions. He
began to conduct experiments by growing bacteria in Petri dishes and treating
them with various chemicals. Unfortunately, none of the chemicals he tested proved
effective at stopping the bacteria's growth.

given the fact that the question is about the detail that best support the idea that oppressive leaders use   propaganda to achieve thir goals,   the first option does not refer to any kind of propaganda, since it only tells about that the milk and the windfall apple should be reserved for the pigs. in the second option, that is, "snowball and napoleon sent out flights of pigeons whose instructions were to mingle with the animals on the neighbouring farms, tell them the story of the rebellion, and teach them the tune of "beasts of england". it can be identified that the oppressors make use of the propaganda, which is represented by the pigeons, and the information they have to tell other animals about what was happening in the farm in order to get their objectives. for that reason, the right answer is the second option, taking into account that the third option do not refer to propaganda since it only talks about that they did not want jones back. and, finally, the last option refers to the result of the given news, but it does not mean about the propaganda they used to achieve their goals.

d. lennie pats too hard, and then panics.