What problems do flooding and extreme weather cause?

extreme weather causes damage to crops Extreme heat presents a problem too, as having heart disease makes it harder to regulate the body's core temperature. "People forget they have heart disease. All of a sudden, they're sweating profusely and dehydrated," Pollock says, noting factors that can lead to heat exhaustion and heat stroke. flooding is an overflow of water that submerges land that is usually dry. In the sense of "flowing water", the word may also be applied to the inflow of the tide. Floods are an area of study of the discipline hydrology and are of significant concern in agriculture, civil engineering and public health.

Explanation:

i think it's letter a.