I'm unable to view images, including the one you're referring to in your question. However, I can help you understand what an isolated system is and what characteristics to look for in a model to find the best representation of it.
An isolated system is one that does not exchange matter or energy with its surroundings. Here are a few key points to identify a model of an isolated system:
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Boundary Definition: The model should clearly show boundaries that indicate no interactions or exchanges with the external environment.
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Energy Transfer: There should be no energy flow into or out of the system represented in the model.
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Matter Interaction: The model should not depict any matter entering or leaving the system.
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Closed Nature: Look for indications that everything needed for whatever process you're considering (like chemical reactions or physical changes) happens within the boundaries of the system.
If you can describe the features of the models, I can help you determine which one might represent an isolated system best.