Explanation
These two applications allow viewing all of the absence records at once, as they support displaying related lists on objects such as service resources or service territories. References:
https://help.salesforce.com/s/articleView?id=sf.fs_absences_overview.htm&type=5

Explanation
Global optimization is a process that reschedules all service appointments within a specified time frame based on predefined criteria such as travel time or priority. It can be used when an extreme weather situation impacts both the volume of work and number of available resources at Universal Containers. Resource Schedule optimization is a process that reschedules service appointments assigned to a specific resource based on predefined criteria such as travel time or priority. It would not address the impact on other resources or unassigned service appointments. Emergency scheduling is a process that assigns emergency service appointments to available resources based on predefined criteria such as travel time or priority. It would not address the impact on existing service appointments or non-emergency service appointments. Customer first scheduling is a process that assigns service appointments based on customer preferences such as preferred time slots or preferred resources. It would not address the impact on resource availability or service level agreements. References:
https://help.salesforce.com/s/articleView?id=sf.fs_global_optimization_overview.htm&type=5
https://help.salesforce.com/s/articleView?id=sf.fs_resource_schedule_optimization_overview.htm&type=5
https://help.salesforce.com/s/articleView?id=sf.fs_emergency_scheduling_overview.htm&type=5
https://help.salesforce.com/s/articleView?id=sf.fs_customer_first_scheduling_overview.htm&type=5

Explanation
A custom Price Book allows different prices for the same products in different markets. A standard Price Book has the same prices for all markets. Pricing rules are not available for Field Service Lightning. References:
https://help.salesforce.com/s/articleView?id=sf.pricebook_custom.htm&type=5
https://help.salesforce.com/s/articleView?id=sf.pricebook_standard.htm&type=5
https://help.salesforce.com/s/articleView?id=sf.fs_pricing.htm&type=5

Explanation
Permission Sets are records that grant users access to specific features or apps such as Salesforce Field Service[214]. Scheduling licenses are records that grant users access to scheduling features such as Dispatcher Console or Optimization[215]. Creating Permission Sets and assigning the Salesforce Field Service Resource Permission Set and Scheduling license to each Technician would allow Universal Containers' Technicians to update their own appointments' status using the Dispatcher console Gantt chart by granting them access to Salesforce Field Service mobile app features such as updating status and granting them access to scheduling features such as viewing Gantt chart[216]. Creating Permission Sets and assigning the Salesforce Field Service Scheduling and Mobile Permission Sets to the Resource profile would not allow Technicians

Explanation
These two ways should be recommended to track these inventory requirements in Salesforce, as they allow specifying which products are needed for work orders or work order line items and updating the inventory accordingly. References: https://help.salesforce.com/s/articleView?id=sf.fs_products_required.htm&type=5