Why was communism an attractive idea in china

I'm not close to being a genius or conqueror, but I can infer from that in China, their recent governments and ruling dynasties like the Ming had been abusing the peasants, leading to mass starvations and revolts all across China. Karl Marx's idea of equality seemed promising to the weary nation, but it faced much opposition from the nationalists and those harboring democratic ideals. Unfortunately, Mao De Zong and the Communists took power, forcing the opposition to flee to Taiwan. Thus the era of the People's Republic of China began.

The answer is option a. boundary line drawn by pope alexander iv in 1493.