The session went through SSL decryption processing because the Decryption column shows a green check mark, indicating that the firewall decrypted the traffic and applied security policies. The application has been identified as web-browsing because the Application column shows web-browsing as the application name. The session has not ended yet because the Session End Reason column shows N/A, indicating that the session is still active. The session did go through SSL decryption processing, so option D is incorrect. Reference:
https://docs.paloaltonetworks.com/pan-os/10-1/pan-os-web-interface-help/monitor/monitor-network/monitor-sessions

a) System Logs: The system logs contain information about various events that occur on the firewall, including the commit process. The administrator can review the system logs to verify whether the commit completed successfully or whether there were any errors or warnings during the commit process.
b) Task Manager: The task manager displays a list of all active tasks on the firewall, including the commit task. The administrator can use the task manager to check the status of the commit task, including whether it is in progress, completed successfully, or failed.

https://docs.paloaltonetworks.com/pan-os/10-2/pan-os-admin/high-availability/ha-concepts/ha-timers

https://knowledgebase.paloaltonetworks.com/KCSArticleDetail?id=kA10g000000ClZ1CAK

Template variables are placeholders that you can use in a template or a template stack to represent values that differ across firewalls, such as IP addresses, hostnames, or interface names. Template variables allow you to create a single network configuration that can be reused repeatedly for large-scale deployments even if values of configured objects change1. Option A is incorrect because template stacks are used to group multiple templates together and apply them to firewalls or device groups. Template stacks do not allow you to use variables for different values2. Option C is incorrect because the Shared device group is used to push policies and objects that are common across all firewalls managed by Panorama. The Shared device group does not allow you to use variables for different values3. Option D is incorrect because a device group is used to group firewalls that require similar policies and objects. A device group does not allow you to use variables for different values3.