In the following questions, a sentence is divided into four parts. Choose the part of the sentence which may contain a grammatical error in it. If all the parts of the sentence are Grammatically correct and contextually Meaningful, choose option “no error” as your answer choice. As 2026 begins, China presents a paradox: a nation wrestling with economic (a)/ challenges yet projecting strategic confidence; a leadership tightening political control (b)/ domestically while expanding their diplomatic and institutional reach abroad; (c)/ and a system that is both anxious and assertive. (d)