Which of the following roles can delete a change?

Universal Containers uses Big Objects to store almost a billion customer transactions called Customer_Transaction__b.
These are the fields on Customer_Transaction__b:
Account__c
Program__c
Points_Earned__c
Location__c
Transaction_Date_c
The following fields have been identified as Index Fields for the Customer_Transaction__b object: Account__c, Program__c, and Transaction_Date__c.
Which SOQL query is valid on the Customer_Transaction__b Big Object?

Which of the following roles can update change type?

It is important to define the VIP users in order to correctly calculate incident priority.

How to configure the fields to be copied from the original incident when an incident is copied?