When comparing cholera outbreaks of the past and present, we said that 19th-century london and present-day zimbabwe have poor healthcare by modern standards. how can we explain the poor healthcare in these situations? a. both countries lack or lacked the resources to treat water. b. both countries are or were unaware of the cause of cholera. c. london lacked resources to treat water, and zimbabwe does not know the source of cholera. d. london did not know the source of cholera, and zimbabwe lacks the resources to treat water.