Did Adam Speak Hebrew?

Mosaic reader Rod Elkin writes:

Your column about the Canaanite sentence on the ancient lice comb was fascinating. It brings to mind the question: what was the language in which God spoke with Adam?

My first instinct would be to answer, “I don’t know, I wasn’t there,” but in the Bible, of course, God and Adam speak in Hebrew. And presumably Mr. Elkin is asking: if, as my column observed, the Hebrew of biblical times developed from ancient Canaanite, and ancient Canaanite, like all languages, developed from a previous ancestor, what language do we arrive at if we go all the way back to the time of Adam? Or to rephrase the question: what was the first language spoken by Homo sapiens when he began to speak?