Final answer:
In the context of risk management, senior managers are ultimately responsible for any losses resulting from residual risk as they make strategic risk acceptance decisions and are accountable for the organization's risk culture and resources.
Step-by-step explanation:
Who is ultimately responsible for losses resulting from residual risk? The correct answer is C. Senior managers. In the context of risk management, residual risk refers to the level of risk that remains after measures have been taken to reduce or control the original risks identified in an organization's risk analysis. While technical staff, security personnel, and end users all play a role in mitigating risks, it is the senior managers who are ultimately responsible for making strategic decisions about the level of risk the organization is willing to accept. They prioritize resources, set the tone for the organization's risk culture, and are accountable for the financial and operational consequences of residual risks.