Final answer:
The subject is Social Studies. The base of the pyramid represents the vast majority of humanity, about 5 billion people who make less than $2K a year. The top tier of the pyramid represents people with more resources.
Step-by-step explanation:
The subject of this question is Social Studies. In social studies, we study various aspects of society and human behavior, including social structures and economic disparities. This question specifically relates to the social stratification and the distribution of wealth and resources among different layers of society.
The vast majority of humanity, about 5 billion people who make less than $2K a year, is represented by the base of the pyramid. This refers to the lower layers of our society where people have fewer resources and live in poverty. The top layer of the social structure, which represents people with more resources, is the top tier of the pyramid.
For example, in countries like China, India, Nigeria, and Egypt, a substantial share of the population lives on less than $2 a day. About half the world lives on less than $2.50 a day and 80 percent of the world lives on less than $10 a day.
This terminology is used to describe socio-economic groups in which the vast majority of humanity, who earn less than $2K a year, are located at the base of the pyramid. The concept of the pyramid in social stratification represents different layers of society based on resources and wealth. Those at the top of the pyramid have the most resources, while those at the base have the fewest. In the case of the question, the base of the pyramid is composed of about 5 billion people globally, often living on less than $2.50 a day, which makes up approximately half of the world's population. These figures can represent a higher purchasing power in countries with lower living costs than in the United States. The base of the pyramid includes many individuals from countries with large populations and significant poverty, such as China, India, Nigeria, and Egypt.