Answer :
A model is a simplified representation of an object, structure, or system used in analysis, explanation, interpretation, or design.
Answer: The correct answer is Model.
Model is defined as the three dimensional representation of any object, structure, or any system. It is made in a simplified way and can be used for analysis, explanation, interpretation, or design of that system.
Example- A scientific model like Bohr's atomic model representing structure of an atom.
Thus, model is the right answer for the question.