Explanation
Changing the Work Order with a closed status of "Cancelled" allows tracking Work Order cancellations and subsequent follow-ups using reports or dashboards based on Work Order status field values[23. Re-using the existing Work Order for the follow-up allows maintaining the relationship between the original customer request and the follow-up action without creating duplicate records[24. Changing the Work Order with a status of "New" would not indicate that it was cancelled before. Creating a child Work Order for the follow-up Work Order would create an unnecessary hierarchy of Work Orders that could complicate reporting and scheduling.
References: [23. https://help.salesforce.com/s/articleView?id=sf.fs_work_orders.htm&type=5 [24.
https://trailhead.salesforce.com/en/content/learn/modules/field-service-lightning-basics/field-service-lightning-w

Explanation
Articles are records that contain information or instructions about products, services, or processes[168]. Work Orders are records that track customer requests for service such as repairs or maintenance[169]. Writing a workflow that associates Articles to Work Orders based on a picklist on the Work Order would allow Universal Containers to ensure its Technicians can access Knowledge Articles offline by creating a workflow rule that triggers when a picklist value on the work order is selected and adds the relevant articles to the work order related list[170]. Using Work Types to assign associated Articles to Work Orders would not work because Work Types are records that define the standard tasks and duration for a specific type of work and do not have a direct relationship with articles[171]. Using the Salesforce mobile app with deep linking to the Salesforce Field Service mobile app would not work because deep linking is a feature that allows launching one app from another app and does not affect offline access[172]. Creating a custom mobile app that syncs articles based on Service Appointment assignments would not work because it would require additional development and maintenance and would not leverage the existing Salesforce Field Service mobile app features[173]. References:
https://help.salesforce.com/s/articleView?id=sf.knowledge_article_types.htm&type=5
https://help.salesforce.com/s/articleView?id=sf.fs_work_orders.htm&type=5
https://help.salesforce.com/s/articleView?id=sf.fs_work_orders_knowledge_articles.htm&type=5
https://help.salesforce.com/s/articleView?id=sf.fs_work_types_overview.htm&type=5
https://help.salesforce.com/s/articleView?id=sf.fs_mobile_deep_linking.htm&type=5
https://help.salesforce.com/s/articleView?id=sf.fs_mobile_overview.htm&type=5

The Exclude Technician from Geolocation Tracking permission allows a user to exclude technicians from geolocation tracking. Setting the Geolocation Update Frequency field to zero for contractors, unchecking the Geocoding field on the Contractor's profile, or unchecking the Collect Service Resource Geolocation History field in Field Service Mobile Settings will not help with this requirement as they are not designed to exclude technicians from geolocation tracking.