You are presented with the question "What can cause erosion and landslides?" and the following answer choices: 
- condensation
 - mines
 - mouth of rivers
 - heavy rain
 - chemical reaction
 - vehicles
 - electricity
 - deforestation

Now knowing that heavy rains cause flooding and with the rain comes floods, and with the floods come erosion and landslides, choose the best answer.


 

    heavy rain     