正解:D
When a company uses a model-driven app that incorporates a Power Virtual Agents chatbot, and has multiple locations with different environments for each location, it is necessary to create separate Power Virtual Agents bot environments for each location.
For each location, 3 different environments are required: development, testing, and production. This is in line with the Application Lifecycle Management (ALM) process that the company uses.
In total, 6 Power Virtual Agents bot environments are required: 2 locations x 3 environments per location = 6.
It's worth mentioning that Power Virtual Agents allows to export and import the bot, so once you configure the bot in one environment, you can import the bot to the other environments, this way you don't need to start from scratch.
References:
* https://docs.microsoft.com/en-us/power-virtual-agents/create-bot/bot-lifecycle
* https://docs.microsoft.com/en-us/power-virtual-agents/create-bot/export-import