问题详情

The passage tells us that the most probable reason for the death of the mice in Ader’s experiment was that ________.
A) they had been weakened psychologically by the saccharin
B) the sweetener was poisonous to them
C) their immune systems had been altered by the mind
D) they had taken too much sweetener during earlier conditioning请帮忙给出正确答案和分析，谢谢！