Final answer:
The correct answer is option b. The remaining risk that exists even after implementing countermeasures is called residual risk.
Step-by-step explanation:
The remaining risk that exists even after implementing countermeasures is called residual risk.
Residual risk refers to the level of risk that remains after all efforts have been made to mitigate or reduce the potential risks faced by an organization or company. It is the risk that exists despite the implementation of risk management measures.
For example, let's say a company has implemented various security measures to protect its assets, such as installing surveillance cameras, hiring security guards, and implementing access control systems. However, there may still be a small level of risk left due to unforeseen circumstances, human error, or new vulnerabilities that emerge over time. This remaining risk is known as residual risk.