What is an endocast, and what does it tell us about human, chimp, and Selam's brains?
a) An endocast is a fossilized brain, revealing the intelligence of each species.
b) An endocast is a mold of the inside of the skull, providing insights into brain size and structure.
c) An endocast is a type of genetic test to assess brain development.
d) An endocast is a method to measure brain activity in living individuals.
