The correct answer is D. Haiti
Step-by-step explanation
According to the data presented in the table, it can be stated that the country with the lowest standard of living is Haiti because it has the lowest life expectancy of all the countries compared in the table. This is because a large part of the population has very low income, as shown in the row of "Percent living on less than $ 1.25 / day" 55% of the population has to subsist on very little money per day. Finally, the most important data is the GDP, an indicator that allows knowing how economically prosperous through all the products and services produced by that country in a period divided into its entire population. As seen in the image, Haiti has the lowest indicator, which shows that its economic development is not as prosperous as the other countries. So the correct answer is D. Haiti