Key control indicators (KCls) help to assess the effectiveness of the internal control environment PRIMARILY...

According to the definition of key control indicators (KCIs), they are metrics that provide information on the extent to which a given control is meeting its intended objectives in terms of loss prevention, reduction, etc.1 Therefore, option D is the correct answer, as it reflects the purpose and function of KCIs. The other options are not accurate descriptions of KCIs, as they do not directly relate to the performance or outcome of the control. Option A is more relevant to the efficiency or productivity of the control, not its effectiveness. Option B is more relevant to the role of key risk indicators (KRIs), which measure the level of risk exposure or potentialimpact of risk events2. Option C is also more related to KRIs, as they monitor changes in the likelihood or frequency of adverse events due to risk factors2.