City E conducted a public policy poll to randomly select 1,000 citizens to answer relevant questions. One month later, a thousand citizens were again randomly selected to answer the same question, but the order of the questions was different from the last time. It was found that two The sub-citizen sample gave different questions and answers to many questions, which proves that the same set of questions can sometimes lead to different answers because of the change in the order of the questions. Which of the following hypotheses does the argument rely on? ? ['Some citizens were randomly selected twice and participated in two surveys.', 'The content of the survey question will not affect the answer due to the passage of time.', 'The second survey changed the first anonymous survey to a real-name survey.', 'The second investigation did not disrupt the order of all issues.']