💡 Detailed Explanation
The noun '政治' (politics/government) is read as 'せいじ' (seiji). Sentence translation: 'I am studying politics at university.' '〜について' means 'about/regarding'. 'せいぢ' is an incorrect historical spelling, 'しょうじ' (障子) means sliding paper doors, and 'しょうぢ' is incorrect.