I would say that the best resource is a Encyclopedia
A tragic hero is a hero that was born to be a noble. They heroic qualities since birth. The tragic part would be a supernatural force or a god-like force acting against him (cause how many heroines do you see). The hero has trouble against said forces and wins against them, making us like him. A good example would be Odysseus from the Odyssey.
Answer:
C. “But today, more than 1.1 billion people do not have access to safe drinking water."
Explanation:
Statistics has to do with numerical data