You need to present to the stakeholders a validation of the requirements using the minimally tailored out-of-the-box solution. What common type of demo will you use?

Answer options:

A.Prebuilt
B.Out-of-the-box
C.Prototype
D.Proof of concept

Correct Answer: C 
Visual presentation of the requirements is a vital communication step between a Solution architect and a customer. There are several types of demos that you can use along with your story presentation to the stakeholders: Out-of-the-box — this demo presents the capabilities of the out-of-the-box solution without any customizations. It provides information to the stakeholders about the system`s current functionality. The out-of-the-box demo does not illustrate the requirements but only familiarizes customers with the core features.
Prebuilt — this demo is tailored to the particular vertical and provides more specific to the stakeholders` business information than an out-of-the-box demo.
Prototype — this demo presents the minimally tailored out-of-the-box solution that reflects the customer`s needs or requirements.
Proof of concept — this demo focuses on illustrating the implementation of the particular requirements, components, or technical solutions.
All other options are incorrect. 
For more information about the demo types, please visit the below URL: 

https://docs.microsoft.com/en-us/learn/modules/propose-solution/3-demo