Question

which of the following scenarios is most likely to result in a landslide occurring? a a mountainous region experiences heavy rainfall for several days. b a region with dry soil and little vegetation experiences an extended drought. c a flat plain experiences a period of strong winds.

Explanation:

To determine the scenario most likely to cause a landslide, we analyze each option:

• Option A: Heavy rainfall in a mountainous region increases soil moisture, reducing friction between soil particles and destabilizing slopes, a key factor in landslides.
• Option B: Extended drought in a dry, sparsely vegetated region dries soil, which is less likely to cause landslides (landslides typically need moisture to reduce soil strength).
• Option C: Strong winds on a flat plain affect surface materials but don’t create the slope - related instability needed for landslides.

Answer:

A. A mountainous region experiences heavy rainfall for several days.