I accidentally answered this, if I post this then i could get accused for plagiarism sorry
Answer:
Global life expectancy is the average age that people live to be. This is not a national life expectancy where we look only at one country and is on a global level. The industrial revolution impacted life expectancy by raising wages, living conditions. New technology was invented and many breakthroughs in sanitation were made.
B. Weighted GPA
You see the unweighted is considered the college GPA and removes all AP, IB, or Honors clasess and puts all college applicants on the same level, cumulative GPA is wrong and doesn't make any sense with relation to the question, and the semester GPA wouldn't technically include the extra 10 points that these classes give.