Final answer:
The heading 'Archaeological Findings: Unearthing Florida's Early Human Inhabitants' is best suited for the article because it precisely highlights the discovery of early human presence in Florida and indicates the importance of the archaeological methods used.
Step-by-step explanation:
Optimal Heading for an Archaeological Article
Given the context of the article 'Scientists dig up proof of humans in Florida 14,550 years ago,' the most suitable heading would be 'Archaeological Findings: Unearthing Florida's Early Human Inhabitants.' This heading encapsulates the essence of the archaeological discovery while highlighting the significant timeframe. It offers a clear preview of the article's content, focusing on the archaeological findings that reveal the history of human inhabitants in Florida. It is specific and informative, encouraging the reader to delve into the details of the excavation and the implications it has for understanding early human migration and settlement patterns in North America.
The selected heading is an excellent choice because it directly correlates with the key aspects of the article. It mentions the methodology ('Findings'), the discipline involved ('Archaeological'), and the geographic and historical significance ('Florida's Early Human Inhabitants'). Moreover, it suggests a journey back in time, which aligns well with the narratives discussed in the article's excerpts about ancient settlements, the peopling of America, and the technologies used by Paleolithic humans.