Uncovering the Oldest Human Workshop

• A type of sedimentary rock that is commonly used in construction
• A type of volcanic rock that is formed from the cooling of lava (correct)
• A type of metamorphic rock that is formed from the compression of sedimentary rock
• A type of igneous rock that is formed from the cooling of magma

• It confirms that Homo erectus was the only early human species to use obsidian to make tools
• It indicates the existence of a workshop where human ancestors created flints with sharp blades
• It suggests that early humans were using obsidian to make tools much earlier than previously thought (correct)
• It provides evidence that early humans were capable of advanced planning and imagination

• Homo erectus (correct)
• Homo neanderthalensis
• Homo habilis
• Homo sapiens