Answer:
b. sharper sense of smell.
Explanation:
Paleolithic Age -
It is also called the old stone age , It is the time period in the prehistory of human beings , which is distinguished by the development of tools , which are made up of stones .
The physical changes that was associated with the Paleolithic Age are - large skulls , shorter arms , larger hips , sharper eyesight .
Hence ,
The answer is sharper sense of smell .