Answer:
The sentence provided is a clear and specific statement that makes a claim about a topic, which is the obesity rate in America. It also gives a time frame, 2025, which makes it even more specific. Therefore, it can be considered an effective thesis statement for a position-based research paper on obesity in America.
However, to make it even stronger, Tammy could include the reasons or evidence that support her claim. This would provide a clear direction for the research paper and help readers understand the position she is taking.
Step-by-step explanation: