The AI agrees with the suggested answer.
The suggested answer is C: Ensure the hosts are in a group and assign that group to a custom Prevention policy.
Reasoning:
This approach aligns with best practices for managing security policies in an enterprise environment.

Scalability and Manageability: Grouping hosts allows for easier management of policies across a large number of systems. Instead of assigning policies individually, you can manage them at the group level, which is much more efficient.
Consistency: By assigning a policy to a group, you ensure that all hosts within that group have the same protection settings, reducing the risk of misconfigurations.
Flexibility: Grouping allows you to tailor policies to specific types of hosts based on their function or risk profile.
The question implies that the policy has been already created and ask how to assign it to one or more hosts. Option C is the only logical option to assign the policy to one or more hosts via creating the group first.

Reasons for not choosing other options:

A: Create a new policy and assign it directly to those hosts on the Host Management page: While technically possible in some systems, directly assigning policies to individual hosts is not scalable or manageable in large environments. The question implies that the policy has been already created.
B: Modify the users roles on the User Management page: User roles are related to user permissions and access control, not host-based security policies. This option is irrelevant to the question.
D: Create a new policy and assign it directly to those hosts on the Prevention policy page: Similar to option A, directly assigning policies to individual hosts is not scalable or manageable in large environments and the question implies that the policy has been already created.