This word means the same as the given italicised word. Hence, option C is correct.
Option A: 'Confused' means 'unable to think clearly or understand something'.
Option B: 'Aggressive' means 'behaving in an angry and violent way towards another person'.
Option D: 'Wayward' means 'doing only what you want and behaving in way that is difficult to control'.
These words do not mean the same as the given word 'articulate'.
So, options A, B and D are wrong.