According to Amy Edmondson, which of the following should be ensured in an organization to develop a psychologically safe environment for effective post-incident change? Multiple choice question. The problems that are known must be acknowledged, and mistakes must be admitted fairly and willingly. People must not be held accountable as it is always the policies and programs that are blameworthy. Those who report failures must be discouraged rather than praised. Failures must not be discussed openly during team meetings