Managing a risk by the project manager or assigning separate manager is preferable? why

In project management, risk management can be approached in two main ways: either the project manager handles it or a separate risk manager is assigned.
When the project manager oversees risks, they benefit from a holistic view of the project, ensuring risk management is seamlessly integrated with other processes and maintaining consistent communication. This approach can be resource-efficient, especially for smaller projects.
Conversely, assigning a dedicated risk manager brings specialized expertise and allows for focused attention on risk analysis and mitigation, which is beneficial for large or complex projects. Ultimately, the choice depends on the project’s size, complexity, and available resources, but the primary goal is to ensure that risk management is adequately prioritized to safeguard the project's success.