qobjects = [ { question: "What is a correct syntax for joining set1 and set2 into set3?", options: [ "set3 = join(set1, set2)", "set3 = set1 + set2", "set3 = set1.union(set2)" ], correct: 2 }, { question: "What is a correct syntax for joining multiple sets into one new set called set5?", options: [ "set5 = join(set1, set2, set3, set4)", "set5 = set1 | set2 | set3 | set4", "set5.union(set1, set2, set3, set4)" ], correct: 1 }, { question: "There are many ways to join sets in Python. Which one of the following methods keeps ONLY the duplicates?", options: [ "intersection()", "union()", "difference()" ], correct: 0 } ]