Final answer:
The Policy Details setting with an Ignore option is 'Monitor', where activities are logged or observed without immediate action, different from Block, Allow, or Quarantine options.
Step-by-step explanation:
The Policy Details setting that has an Ignore option is c) Monitor. In the context of network or application policy management, 'Monitor' typically means that the activity is logged or observed without any preventive action being taken. This contrasts with 'Block', which would prevent the action altogether, 'Allow', which would let it pass without logging, and 'Quarantine', which would isolate it for further examination or action. The Ignore option within a Monitor setting might be used when an organization wants to track certain activities without generating alerts or taking policy enforcement steps.