B. They are longer and more detailed
3 is the answer to the question
I would put C, to be honest. so that people can understand just a bit better.
The correct answer is C.
The Ferlite Crescent is a region named due to its crescent shape which was inhabited by ancient civilizations such as the Sumer or the Ancient Egyptians. In the settlements of this region, agriculture begun due to the excellent conditions for growing crops generated by the inundations of the rivers Nile, Eufrates and Tigris, that enabled very profitable agricultural activities and animal husbandry.
This area is also important due to the emergence of crucial inventions and technological developments such as the wheel, glass, writing, and also, related to agriculture, the first irrigation systems.
It was "mountain ranges in the north and west" that helped India develop for thousands of years in this way, since these mountains were very hard to cross with large armies.
