You design an automation strategy for a company and identify a repeated logic. You are considering implementing reusable child flows. 
What triggers can you use for child flows?

Answer options:

A.Manually-triggered button
B.Scheduled
C.Power Apps
D.Automated
E.HTTP request

Correct Answers: A, C and
E. 
Power Automate provides five types of flows: Automated — this cloud flow type is triggered by an event, like when an email comes from your manager
Instant — this cloud flow type is triggered manually, like when you push a button
Scheduled — this cloud flow type is triggered on a schedule, like sending a report on every working day at 8 am.
Desktop — this flow type automates processes for your desktop and web applications
Business process flow — this flow type guides users step-by-step through the business process.
When a Solution Architect designs an automation strategy for the project, he or she needs to manage the flow’s complexity and identify the repeated steps. One of the best ways to manage complexity is to divide your flow into the parent and child (nested) flows. This approach helps with the repeated logic as well. 
The child flow is the normal flow that you design separately and then add it to the parent flow. The parent flow can wait for one year for the child to finish with the built-in connections and Dataverse and for 30 days for the rest of the connectors. 
The child flow can be triggered by the Manually-triggered button, Power Apps, or HTTP request. You must have the Respond step in your child flow to let the parent flow know when the child flow finishes. For example, the Power Apps connector has the Respond to a PowerApp or flow action that you can use in your child flow. 

All other options are incorrect. 
For more information about Power Automate child flows, please visit the below URLs: 

https://docs.microsoft.com/en-us/learn/modules/power-automate-architecture/5-best-practice
https://docs.microsoft.com/en-us/power-automate/create-child-flows
https://techdailychronicle.com/nested-flows-in-power-automate-running-child-flows/