The Stone Age<span> was a time thousands of years ago, when humans lived in caves and jungles. </span>Life<span> was simple, and there were only two main things to do – to protect themselves from the wild animals and to gather food. It started almost with the evolution of mankind. For both purposes, people made tools from </span>stone<span>.</span>
<span>I'm pretty sure that it's wrong topic. Anyway, I think I know correct answer. Here it is with missing word: Researchers have found that infant fear is linked to guilt, empathy, and low aggression at 6 to 7 years of age.</span>
<span>The system of democratic government that began to develop in the first decade of the 5th century B.C. in the Ancient Greek city-state of Athens was a direct, rather than representative, democracy, and every adult male citizen could participate. An assembly of citizens and a council, or boule, met on an almost weekly basis and was responsible for deciding upon the civic and foreign policy affairs of the city-state. Not only were Athens' citizens encouraged to participate in the assembly meetings, those who did not participate were often ridiculed for their lack of involvement.</span>
The answer should be A, and or D? i’m not to sure.
The answer is b. because she discovered a comet.
