When everyone begins to agree and there are no contradictory voices, even the most ill-conceived ideas can take root. 
(A) When everyone in a group begins to have the same views on everything, even the worst ideas might be taken into account. 
(B) When everyone in a group begins to listen to and believe in one another, even well-meant ideas may be viewed truly evil. 
(C) When a group of people never agree with one another, they may end up coming up with some wrong ideas.
(D) When a group of people never see things in different ways, they will never have to worry whether their ideas are good or bad.