Its a small european mussel that clusters densely on surfaces.
This answer is B , which is also correct on Plato.
-their brain size increased. This means that they adopted more intelligent traits
-for tools and weapons, they made them more lighter.
-they were the first to create art as hominids
It was a monarchy which means a king was in power. there were many small rebublica in ancient india which had some democracy in their administration. members of the council of minister could give advice to the king but all final desicions were left to the king . hope this helps!