English Language · Sentence Insertion

There is a sentence that is missing in the paragraph below. Look at the paragraph and decide in which blank (1, 2, 3, or 4) the following sentence would best fit. Sentence: As a result, they held a trial and sentenced Socrates to death. Paragraph: Socrates had many disciples and the greatest of these was Plato. Plato wrote several books which have come down to us. 1_ It is through these books that we know a great deal of his teacher, Socrates. The Athenian government - just after the time of Pericles- did not like the methods of Socrates. 2 They told him that if he promised to give up his discussions with common people and changed his ways, they would pardon him and let him off. 3 But Socrates refused to do so and preferred to drink the cup of poison which brought about his death, to giving up what he considered to be his duty. 4_