The correct answer to this open question is the following.
Although there are no options attached, we can say the following.
The skills did ancient Indian and Chinese people used to create civilizations were the knowledge they had to develop agriculture techniques and to understand the flooding of the rivers so they could grow good cash crops to survive. The Indus Valley civilization settled in the banks of the Indus River and the Chinese civilization did the same but along the Yellow River. That is what the ancient civilizations did to survive and prosper. We are referring to Sumeria, that settled in the middle of the Tigris and Euphrates Rivers, and ancient Egypt that settled along the Nile River.