Mountains hills and deserts the chinese to thrive because

The correct answer to this open question is the following.

Mountains Hills and deserts helped the Chinese to thrive because they protected China, gave them safe borders, and made very difficult for intruders to invade China.

These geographical features helped China to be isolated for many years. These features are the Himalayas, the Yellow River, the Gobi Desert, Mount Everest, the Yangtze River, and the Taklamakan Desert.

i think it's b or c hope this