Final answer:
According to the World Bank classification, Bangladesh is the nation among the options provided that falls into the lower-middle-income category.
Step-by-step explanation:
The World Bank classifies countries into different income categories based on their Gross National Income (GNI) per capita. To identify which nations fall into the lower-middle-income category, we refer to the World Bank's definition, which catalogs lower middle income areas as those with a GNI per capita of more than $1,036 but less than $4,045. Among the choices given—Burundi, Bangladesh, Egypt, Venezuela—the correct answer is Bangladesh. As per the World Bank data, Burundi is listed in the lowest income category, while at the time of the information provided, Bangladesh fits the criteria for the lower-middle-income group.