"Which method is frequently used in civil engineering to mitigate the risk of infrastructure damage from landslides and slope instability?

A$)$ Implementing rainwater harvesting systems to manage stormwater runoff.

B$)$ Constructing retaining walls and slope stabilization structures.

C$)$ Installing geothermal heating systems to reduce energy consumption in buildings.

D$)$ Implementing bike lanes and pedestrian$-$friendly pathways to promote sustainable transportation."