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Scenario: Professor Charles Xavier, the telepathic founder of the X-Men, has decided to migrate the on-premises infrastructure of the Xavier Institute, as it nears its end-of-life. Project Details: As part of the IT migration project, Logan is preparing a dataset for training a model. Issue: Each record appears twice in the table df, and Logan needs to remove duplicate rows to ensure each observation is included only once. Question: Which function should Logan use to achieve this?