The world population during the Paleolithic Era was under 10 Million ( so the first answer is the best), It achieved the next option ( I assume that the option 2 is actually 350 000 000, so that it´s in an increasig order) only in our time (common era, when the time was no longer BCE).
Answer: B) Yosemite
In 1903, President Theodore Roosevelt visited Yosemite National Park ! :D
Explanation:
The environment became more diverse new species of plants and animals developed
Less terroristic attacks.
