Why did the Black Death never become "endemic" in Europe? * a, The climate caused the rats and fleas that carried the plague to die.
b The plague moved to China and India in 1855.
c vaccine was created for the Bubonic Plague.
d Everyone understood that good hygiene killed the bacteria.

D. everyone understood that good hygiene killed the bacteria

In addition to them learning this, they implemented strategies of quarantine, as they would isolate anyone who was effected by the plague. Isolating these people was the most effective strategy, as it would either die off or killing bacteria would rid healthy people of the plague.

In a group discussion,which of these is the best example of challenging credibility of a source. the answer choice is a