
Extract the answer to the question from the following context.
Question: Which of the following is not one of the Indo-European words that support a close relationship between the Indo-Iranian and Baltic and Slavic languages: flora, fauna, or early?
Context: In order to explain the common features shared by Sanskrit and other Indo-European languages, many scholars have proposed the Indo-Aryan migration theory, asserting that the original speakers of what became Sanskrit arrived in what is now India and Pakistan from the north-west some time during the early second millennium BCE. Evidence for such a theory includes the close relationship between the Indo-Iranian tongues and the Baltic and Slavic languages, vocabulary exchange with the non-Indo-European Uralic languages, and the nature of the attested Indo-European words for flora and fauna.

early
