Respuesta :
Answer:
Option: c. that abstract thought in humans occurred much earlier than once thought.
Explanation:
The discovery of the Blombos cave in cape Town considered to be one of the important archaeologist discovery in Africa which gives information about the behaviours of our ancestors. The abstract drawing which we found in the cave is dated back to 73,000 years old. The excavations from Europe, Africa and Southeast Asia is dated back to 40,000 years ago. This notable discovery foreshadows the earliest previously known abstract and figurative drawings.
The correct answer is letter C, that abstract thought in humans occurred much earlier than once thought. This excavations were very important because they gave new and important information about the behavioral evolution of modern humans. The innovations that humans once made were excavated from these archaeological finds giving people more knowledge how we have evolved.