The concepts of inherent effect and residual effect are critical in understanding the impact of risk controls and mitigation strategies in risk management.

Inherent Effect (Inherent Risk):

Refers to the level of uncertainty or risk before any actions, controls, or mitigation measures are implemented.

It represents the raw risk that exists naturally in the absence of preventive or corrective measures.

Residual Effect (Residual Risk):

Refers to the level of uncertainty or risk after actions, controls, and mitigation measures have been implemented.

It represents the remaining risk that an organization must accept or tolerate despite its efforts to reduce it.

Why Option B is Correct:

Option B accurately reflects the distinction:

Inherent effect = effect of uncertainty without controls.

Residual effect = effect of uncertainty with controls.

Options A, C, and D confuse the relationship between risk, reward, controls, and uncertainty and are therefore incorrect.

Relevant Frameworks and Guidelines:

ISO 31000 (Risk Management): Discusses inherent and residual risk as key components of risk evaluation and treatment.

COSO ERM Framework: Highlights the importance of assessing inherent and residual risks when evaluating the effectiveness of risk controls.

In summary, the inherent effect of uncertainty is observed before controls are applied, while the residual effect is the remaining uncertainty after implementing controls. This distinction is crucial for evaluating the effectiveness of risk mitigation strategies.