What event in 1755 seriously challenged religious faith?
1) the french revolution
2) the black plague
3) the lisbon earthquake
4) the chicago fire.

3) The Lisbon earthquake

Explanation: On November 1, 1755 ,  in the morning hours ,the Libson city got horrifically attacked by the The earthquake which was known as "The great Libson earthquake". There was also a tsunami after the earthquake which stared a fire for regular five days and ruined every part of it. It almost killed from 60,000 to 100,000 people in that destruction along with high environmental loss.

littering streams           is the answer

the correct answer, according to e2020, is the second choice there is an occluded front in region a and a cold front in region b.