学员的信心往往会因为教员以下哪一种行为而受到打击？ Which condition trainee confidence tends to be destoryed if instructors?
A.当教员对某些教学内容拿不准却又欺骗学员时 Bluff whenever in doube about some point
B.指出学员的错误或失败时 Identify trainee errors and failures
C.指出学员的错误并予以指导时 Identify trainee errors and provide direction
正确答案是1