Which of the following is a way heavy rain affects the soil?

The correct answer is "Causes soil erosion." 

Heavy rain can cause soil erosion as the force of the water running over the soil can carry away the top layer of soil. 

It can also contribute to deforestation, wash away soil and exposed tree roots, making them more vulnerable to damage. 

While heavy rain can loosen the soil and increase water infiltration up to a certain point, if the rainfall is too intense, it can cause the soil to become compacted, making it difficult for water to penetrate the soil and reach plant roots. 

Therefore, soil erosion is one of the ways heavy rain can affect the soil.