A.I. Explanation:

Option 1: "Settlers from Arab Countries constitute a significant fraction of Kenya’s population today."

Explanation: The text does not provide any information about the current population composition of Kenya, particularly regarding the fraction of settlers from Arab countries. Therefore, this statement cannot be confirmed as true based on the text.

Option 2: "Cushitic speaking people moved into today’s Kenyan territory around 2000 years ago."

Explanation: The text states that Cushitic-speaking people migrated to Kenya around 2000 BCE, which is approximately 4000 years ago, not 2000 years ago. However, since the question asks for a statement that is not true, this option is indeed the correct answer as it misrepresents the timeline.

Option 3: "Arab traders started paying regular visits to Kenya ever since the turn of the Common Era."

Explanation: The text mentions that Arab traders began frequenting the Kenyan coast in the first century CE, which supports the idea of regular visits. Therefore, this statement is true and does not fit the criteria of being untrue.

Option 4: "The Kenyan coast has over the centuries served host to diverse communities and cultures."

Explanation: The text indicates that the Kenyan coast hosted various communities, including iron workers, subsistence farmers, hunters, and fishermen, which supports the idea of diversity. Thus, this statement is true and does not meet the criteria of being untrue.