You create a business process flow. 
Please select all correct statements about stages and steps of your flow.

Answer options:

A.Each stage can be associated with several tables
B.Every new step has at least one stage
C.Each stage can support a Many-to-many relationship
D.Power Automate tracks the stage executions in the special custom table
E.Each data step can only be connected to one data field

Correct Answers: D and E 
The business process flow is one of the Power Automate flow types. It guides users through the process of data operations with one or several Dataverse tables. Business process flow consists of stages. Each stage can be associated with only one Dataverse table. A stage contains one or more steps that represent the table`s fields. Option D is correct because when you create a new business process flow, Power Automate creates a new custom table under the Name of the flow that the user provides at the time of the Business process flow creation. During the flow execution, Power Automate tracks stage progressions and events. You can use this table for further analysis of the Business process flow performance.
Option E is correct because each data step can only be connected to one data field associated with the stage table.
Option A is incorrect because each stage can be associated with only one Dataverse table. A business process flow can include operations with not more than 5 tables (entities). It also has a maximum of 30 stages.
Option B is incorrect because every stage has at least one step.
Option C is incorrect because Business process flow cannot support any Many-to-many relationships. It can support only One-to-many or Many-to-one.
For more information about Power Automate Business process flow, please visit the below URLs: 

https://docs.microsoft.com/en-us/power-automate/create-business-process-flow
https://docs.microsoft.com/en-us/power-automate/business-process-flows-overview