Final answer:
Mudflows typically follow the local drainage network, which is true. These powerful movements of saturated earth can carry debris and cause significant changes to the landscape.
Step-by-step explanation:
Mudflows do indeed tend to follow the local drainage network, which makes the correct answer A. True. When slope material becomes saturated, it can result in a debris flow or mudflow. This mixture of rock and mud can carry along anything in its path, including natural elements and man-made structures. As the flow moves downhill, it often finds the path of least resistance, which aligns with the existing drainage patterns of the landscape—such as streams and riverbeds.
The impact of mudflows on communities can be significant as they can block bridges and tributaries, leading to flooding. Additionally, given the density and volume of a mudflow, it can significantly reshape the drainage topology of an area by depositing sediments and altering river courses.