True about thought is A/E: (A) Perseveration is out of context repetition, (B) Circumstantiality is over inclusion of irrelevant details eventually getting back to original point., (C) Verbigeration is senseless repetition, (D) Vorbiereden is skiing around end point but never reaching it.
Answer is D. D . i.e. Loosening of association is logically connected loss of goal directedness