The correct answer is d. hunting -gathering.
Hunting and gathering was already existing before this : in fact the neolithic revolution was going away from this lifestyle and starting farming and domestication of animals.
The answer to your question is cotton
hope this helps
2 because it explains better
The New Life Movement (Chinese: 新生活運動; pinyin: Xīn Shēnghuó yùndòng) was a government-led civic movement in 1930s China to promote cultural reform and Neo-Confucian social morality and to ultimately unite China under a centralised ideology following the emergence of ideological challenges to the status quo.
