Which of the Following Does the Author Identify as a Success

Which of the following does the author identify as a success the global economy has achieved in the past sixty years?

A) School enrollments have more than doubled across the globe.
B) Infant mortality rates have dropped by more than 60 percent.
C) A reduction in poverty has meant fewer than one million people across the globe go hungry each day.
D) Life expectancy in the past century has risen by 50 percent to 78 years.