Answer:
Criterion: A criterion is a certain requirement that someone must meet in order to qualify for something. (Judging, evaluating, or selecting something.)
A model is a three-dimensional of a person/thing or of a proposed structure.
A mock up is a model or replica of a machine or structure, used for instructional or experimental purposes.
A prototype is a first or preliminary version of a device or vehicle from which other forms are developed.
<h3>Thanks a lot for that motivational short speech!</h3>
<h3>#1AtLeaderboard</h3>
