To determine how paragraph 4 develops the claim made in the article title, we would need to know the specific claim made in the title. However, based on the options provided, the most likely answer would be:
The paragraph develops the idea that researchers are interested in what it takes to live a long life.
This option seems to connect the broader implications of Lonesome George's unique characteristics with the ongoing research into longevity, aligning with what might be a central theme of the article. The other options focus more narrowly on specific aspects of DNA, lifespans, or health conditions, which may not broadly address the overall claim of the article as effectively.