Final answer:
The poorest one-fifth of the world's population receives less than 1% of global income, which implies the correct answer is d. 2%. This highlights the extreme income inequality present in the global economy.
Step-by-step explanation:
Approximately what percent of the world's income is received by the poorest one-fifth of the world's population? Based on the information provided, low-income countries represent less than 1% of global income while constituting 8.6% of the global population. Therefore, the correct answer to the question is d. 2%.
Income inequality is a significant issue globally, with a vast disparity between the richest and poorest. High-income countries possess a large portion of the world's income as compared to low-income and some middle-income countries. It's also essential to note that half of the world population lives on less than $2.50 a day, drawing attention to the pressing issue of income equality.