What is an example of a polymorphic lookup field in Salesforce?

A Salesforce Administrator used Flow Builder to create a flow named ''accountOnboarding''. The flow must be used inside an Aura component.
Which tag should a developer use to display the flow in the component?

Universal Container uses Salesforce to create orders.
When an order is created, it needs to sync with the-in-house order fulfillment system. The order fulfillment system can accept SOAP messages over the HTTPS. If the connection fails, messages should be retried for up to 24 hours.
What is the recommended approach to sync the orders in Salesforce with the order fulfillment system?

A developer wants to get access to the standard price book in the org while writing a test class that covers an OpportunityLineItem trigger. Which method allows access to the price book?

A developer writes a trigger on the Account object on the before update event that increments a count field. A workflow rule also increments the count field every time that an Account is created or update. The field update in the workflow rule is configured to not re-evaluate workflow rules. What is the value of the count field if an Account is inserted with an initial value of zero, assuming no other automation logic is implemented on the Account?