Question

Which of the following is a reason the Gros Ventre rockslide took place?

Options:
Option 1: Tectonic plate movement
Option 2: Human excavation activities
Option 3: Volcanic eruption
Option 4: Heavy rainfall

Answer 1

The Gros Ventre rockslide was primarily caused by heavy rainfall that saturated the slope's materials, leading to the slide, not by tectonic movements, human activity, or a volcanic eruption. correct option is 4.

Step-by-step explanation:

The reason the Gros Ventre rockslide took place is related to Option 4: Heavy rainfall. Rock and soil slopes can be weakened through saturation by heavy rains, which is one contributory factor for a landslide. The Gros Ventre rockslide was not caused by tectonic plate movement, human excavation activities, or a volcanic eruption, as the evidence does not indicate these as the primary causes. Instead, the heavy rainfall and resultant saturation of the slope's materials likely played a significant role in its instability leading to the slide.