You create a PVA bot. You want the bot to check your email messages and answer the questions about local weather. 
Please select two activities that can help you accomplish your goal.

Answer options:

A.Automated flow
B.Skills
C.Business process flow
D.Business rules
E.Instant flow

Correct Answers: B and E 
You can extend your bot`s functionality by adding actions using Power Automate and new conversational topics by adding the Bot Framework Skills. Power Automate flows provide to a bot relatively simple one-turn actions, like local weather. The skills can add complex and multi-turn operations, like check email messages and read selective messages. 
Power Automate provides a trigger and action for PVA bots. If a bot needs to access the local weather information, you can build an Instant flow that a bot’s call would trigger. 

Using the "Call an action" node within a topic, you can call the "Local Weather" trigger to start the flow. 

The Power Automate returns the results of the flow execution for the bot to consume. 
Currently, the Bot Framework provides out-of-the-box Calendar, Email, ToDo, and Point of interest skills. You can add them to your bot using the PVA portal Manage/Skills menu item. The skills are the conversational bots that automated the series of actions. You can connect the skill bots with other bots. 

All other options are incorrect. 
For more information about extending the Power Virtual Agents bots, please visit the below URLs: 

https://docs.microsoft.com/en-us/learn/modules/enhance-power-virtual-agents-bots/2-power-automate
https://docs.microsoft.com/en-us/power-virtual-agents/configuration-add-skills
https://microsoft.github.io/botframework-solutions/overview/skills/