According to the article “mississippi floods quad cities,” the flooding of the mississippi river creates a challenge for the people living in the region. what do scientists monitor in order to predict when floods may occur? a. the activity of earthquakes and volcanoes in the region to the west of the mississippi river b. the number of hurricanes that strike the region to the east of the mississippi river c. the phases of the moon, which affect the movement of water on earth d. the amount of snow and rainfall received in the region