1. The first part of the Stone Age is a period in human prehistory where stone tools were used. This is called the

Paleolithic Era
Mesolithic Era
Neolithic Era
Classical Era

Paleolithic

Explanation:

In the Middle Paleolithic, Neanderthals were present in the region now occupied by Poland.

even though you have attached neither the chart nor the generalizations, i have located them online. the right answer is d, since they are asking you about a generalization. you can only infer from the chart that between 2008 and 2009 the number of employed workers decreased significantly (from over 115 millions to 107 millions approximately), which signals some type of economic crisis.