You are creating a bot service. The bot service should: 
-Notify the user at a pre-set time, when a reminder is set by the bot. 
-Intimate the user about an external event upon receipt of a notification 
Which of the below-listed bot service template should you use?

Answer options:

A.Question and Answer bot
B.Form bot
C.Proactive bot
D.Basic Bot

Correct Answer: C
Option A is INCORRECT. QnA bot helps answer questions that the QnA service has in the knowledge base.
Option B is INCORRECT. Form bot collects input from a user.
Option C is CORRECT because a proactive bot can perform the listed 2 actions.
Option D is INCORRECT. Basic bot responds to user inputs via dialogs.
Reference: 

https://docs.microsoft.com/en-us/azure/bot-service/bot-service-concept-templates?view=azure-bot-service-3.0