(plato) which period marks the paleolithic era?

a.
the period between 250,000 and 10,000 years ago
b.
the period between 10,000 and 3,000 years ago
c.
the period more than 250,000 years ago

I'm dead lol: a professor was traveling by boat. on his way he asked the sailor: “do you know biology, ecology, zoology, geography, physiology? the sailor said no to all his questions. professor: what the hell do you know on earth. you will die of illiteracy. after a while the boat started sinking. the sailor asked the professor, do you know swiminology & escapology from sharkology? the professor said no. sailor: “well, sharkology & crocodilogy will eat your assology, headology & you will dieology because of your mouthology.