Persistent  and inappropriate repetition of response beyond the point of relevance is called: (A) Thought insertion, (B) Thought block, (C) Perseveration, (D) Neologism
Answer is C. The patient repeats same response beyond the point of relevance.
Example :

What is your name? – Darshan
What you ate in the morning? – Darshan
Where do you live? – Darshan