Science progressed rapidly during this time.
A. The warm milk comforted my stomach like a warm blanket covering a child.
Answer: Fast and exciting.
“Armed with time” and “determined” are context clues for this answer.
The author acted like he was cleaning laundry with the world and how a few places need to be "cleaned up." Even though an international clean-up is needed, the solution is not as simple as cleaning laundry, should be your answer. :D