The correct answer is option 4) "put sentence 3 after sentence 5". The passage entitled "The Origin of Movies" explains some of the early developments in cinema that led to its great expansion among the masses. By putting sentence 3 after sentence 5, the flow in the text would be more logical because sentence 4 talks about 1902 while sentence 3 talks about 1910, and because sentence 3 states that going to the movies started to be a global pastime and sentence 6 states that "The era of mass entertainment was under way".