The correct answer is A. A common use case for Application Control and URL Filtering rules is to block applications and inform users. Check Point supports UserCheck-style interaction actions where users can receive messages explaining that company policy blocked or restricted the requested site or application. Option D, “Monitor Applications,” is also a legitimate use case in isolation, but option A is the stronger answer because it combines enforcement with user communication, which is a core policy-design pattern in Application Control and URL Filtering. Option B is wrong because creating and managing security policies is the general function of SmartConsole, not a specific App Control/URL Filtering use case. Option C is wrong because installing policies is a management workflow step, not an application/site control objective. Application Control and URL Filtering rules define which users can use specified applications and sites and what usage is recorded in logs. Reference topics: Application Control and URL Filtering rules, UserCheck, Block/Inform actions, Access Control Policy.