Most Quechua people living in the altiplano make a living by

trading goods with city people.
farming and herding.*
mining gold.
drilling for oil.

I agree.

B ; Farming and herding

The correct answer is farming and herding.

To arrive at this answer, we need to understand the lifestyle and economic activities of the Quechua people living in the altiplano. The altiplano is a high plateau in the Andes Mountains, located primarily in Peru and Bolivia. The Quechua people have a long history of farming and herding in this region due to the favorable climate and available natural resources.

One way to find this information is by researching the traditional livelihoods and economic activities of the Quechua people. This can be done by examining historical records, academic studies, or anthropological research. By studying these sources, we can gather information about the traditional practices and economic strategies employed by the Quechua people in the altiplano.

Another approach to answering this question is to consider the geographical and environmental characteristics of the altiplano. The high altitude and harsh climate of the altiplano make it difficult for other forms of economic activity such as mining gold or drilling for oil. These pursuits require different geological conditions and technological capabilities that may not be prevalent in the alpine environment of the altiplano.

Additionally, trading goods with city people is a possible economic activity, but it may not be the primary livelihood for most Quechua people living in the altiplano. Traditional farming and herding practices have been central to their way of life for generations, providing sustenance and a means of survival in the region.

In conclusion, most Quechua people living in the altiplano make a living by farming and herding. This is supported by historical evidence, cultural research, and the environmental conditions of the altiplano.