Explanation
This option allows handling unplanned service during times of severe weather by creating a policy that overrides the existing scheduling policy and using a wizard to reschedule service appointments based on the emergency policy. References:
https://help.salesforce.com/s/articleView?id=sf.fs_emergency_wizard.htm&type=5

Explanation
These are three factors that should be considered when configuring routing. Routing is the process of finding the best resource for a service appointment based on various criteria and constraints. A schedule policy is used to define the routing preferences and rules for a service territory or operating hours. A work rule is used to define a scheduling constraint or preference for a service appointment or a resource. A service objective is used to define a scheduling goal or metric for a service appointment. The Resource Availability work rule is used to calculate travel time and breaks as part of the resource's availability. The Default Travel Speed is used to estimate the travel time between locations if a different travel speed is not specified for the resource.
References: https://help.salesforce.com/s/articleView?id=sf.fsl_routing.htm&type=5
https://help.salesforce.com/s/articleView?id=sf.fsl_schedule_policies.htm&type=5
https://help.salesforce.com/s/articleView?id=sf.fsl_work_rules.htm&type=5
https://help.salesforce.com/s/articleView?id=sf.fsl_service_objectives.htm&type=5

Explanation
Lightning Components are reusable units of user interface that can be customized and embedded in different pages or apps[180]. Work Order Line Items are records that track specific tasks or products related to a work order[181]. Creating a custom Lightning Component that displays Work Order progress and deploying it to Technicians through the Salesforce Field Service mobile app would allow Universal Containers' Technicians to view work progress through the Work Order Line Item card in the Salesforce Field Service mobile app by creating a component that shows the status or completion percentage of work order line items and adding it to the work order line item card layout in the mobile app settings[182]. Creating a custom Visualforce page and adding an external link in the Salesforce Field Service mobile app to view the page in the mobile browser would not allow Technicians to view work progress through the Work Order Line Item card in the Salesforce Field Service mobile app. Visualforce pages are web pages that can display custom user interface using HTML, CSS, JavaScript, and Apex[183]. Creating a Report Chart that summarizes Work Order Line Items and adding a link to the Service Appointment layout would not allow Technicians to view work progress through the Work Order Line Item card in the Salesforce Field Service mobile app. Report Charts are visual representations of report data that can be added to different pages or layouts[184]. Adding the Work Order Line Items related list to the Work Order page layout and assigning the layout to the Technician's profile would not allow Technicians to view work progress through the Work Order Line Item card in the Salesforce Field Service mobile app. Related lists are lists of records that are directly related to another record and can be added to different page layouts[185]. References:
https://developer.salesforce.com/docs/component-library/overview/components
https://help.salesforce.com/s/articleView?id=sf.fs_work_order_line_items.htm&type=5
https://help.salesforce.com/s/articleView?id=sf.fs_mobile_custom_cards_overview.htm&type=5
https://developer.salesforce.com/docs/atlas.en-us.pages.meta/pages/pages_intro_what_is_it.htm
https://help.salesforce.com/s/articleView?id=sf.reports_charts_adding_to_layouts.htm&type=5
https://help.salesforce.com/s/articleView?id=sf.customize_related_lists.htm&type=5

Explanation
Gantt Palettes allow the dispatcher to color code service appointments based on any field value, such as revenue or priority. References: https://help.salesforce.com/s/articleView?id=sf.fs_gantt_palettes.htm&type=5