Final answer:
Approximately 80 percent of the world's population lives on less than $10 per day, reflecting a broad spectrum of low-income individuals with varying levels of financial constraint.
Step-by-step explanation:
According to the data from various sources including the Pew Research Center and the World Bank, about 80 percent of the world's population lives on less than $10 per day. This measure includes different poverty thresholds such as living on less than $1.90, $3.20, and $5.50 per day. The figure of $10 per day is particularly compelling as it encapsulates a wider range of low-income individuals globally, who may not live in extreme poverty but still face significant financial constraints.