When questioned by the police, Daniels denied all of the events and refused to cooperate.

网友回答

A. motivation
B. response
(答案→)C. knowledge
D. association
解析：此处motivation动机；response反应； knowledge 知识，知道； association联合。句意：当被警察讯问时，Daniels否认所有的事情并拒绝合作。All knowledge of意为：知道。