What is the quickest way to present a concept to the stakeholder?

We're doing a school project.

We have four concepts, which all need to be showed, so that the stakeholders can be the one to choose which one we'll be designing. What are some good ways to present a concept, that isn't at all fleshed out yet?

Great design resource

100 Things Every Designer Needs to Know About People (Voices That Matter) Submitted October 29, 2017 at 11:06AM by xynaxia http://ift.tt/2gKx8KT