[ 349 ] Geography and the World GED ® TEST SOCIAL STUDIES FLASH REVIEW • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • Which of the following predictions is best supported by the world population growth data in the chart? a. The world population growth rate will be declining starting by 2050. b. The less developed countries will continue to grow rapidly for the next 150 years. c. The developed countries will experience a population collapse in the next century. d. Within the next century, world population will level off and begin to decline.