To accurately answer your question about how paragraph 4 develops the claim made in the article title, I would need to read the specific excerpt of the article mentioned. However, based on the options provided, the best answer likely relates to the general themes often explored in articles about longevity and cancer resistance in animals such as turtles or tortoises.
If the title of the article relates to the longevity or cancer resistance of certain turtles or tortoises, the option that most closely aligns with that notion is:
The paragraph develops the idea that researchers are interested in what it takes to live a long life.
This answer suggests a connection to the broader purpose of studying these animals, which typically revolves around understanding the biological mechanisms that contribute to their resilience and longevity. If you provide the specific text from paragraph 4 or more details about the article, I can give a more tailored analysis.