Rationale
Because of this model, which gives residents an incentive to protect wildlife, important wildlife populations are increasing at record rates.
This sentence serves as a conclusion or result of the model discussed in the preceding sentences, making it most effective when placed after a section that outlines the model's features and impacts.
A) Placing the sentence after sentence 2 would be premature because it does not provide sufficient context about the model or its effects. Sentence 2 likely introduces the model but does not delve into its implications for wildlife populations, making the connection unclear.
B) If this sentence is placed after sentence 4, it may not fully capture the essence of the preceding discussion. Sentence 4 might still be elaborating on components of the model, and without a clear transition, the implication of increasing wildlife populations could seem abrupt or out of place.
C) After sentence 7 is the optimal placement because, at this point, the model's principles and its positive effects on wildlife are likely well-established. This context allows the sentence to effectively summarize the outcomes of the model, reinforcing the relationship between the incentive provided by the model and the resulting increase in wildlife populations.
D) Positioning the sentence after sentence 10 may lead to it feeling disconnected from the main idea. By this point, the discussion could have shifted too far from the model's specifics, resulting in a loss of clarity regarding how the model directly influences wildlife populations.
Conclusion
The selected placement after sentence 7 allows for a coherent flow of ideas, ensuring that the relationship between the model incentivizing wildlife protection and the resultant increase in wildlife populations is clearly articulated. This strategic positioning enhances the reader's understanding of the model's positive impact, making the argument more compelling and logically structured.