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Which of the following statements in respect of landslides are correct? 1. These occur only on gentle slopes during rain. 2. They generally occur in clay-rich soil. 3. Earthquakes trigger landslides. Select the correct answer using the code given below.

Options

  1. A1 and 2 only
  2. B1 and 3 only
  3. C2 and 3 only
  4. D1, 2 and 3

Correct answer

C. 2 and 3 only

Step-by-step solution

A landslide is defined as the movement of a mass of rock, debris, or earth down a slope. Landslides are a type of "mass wasting," which denotes any down-slope movement of soil and rock under the direct influence of gravity. Slope movement occurs when forces acting down-slope (mainly due to gravity) exceed the strength of the earth materials that compose the slope. Causes include factors that increase the effects of down-slope forces and factors that contribute to low or reduced strength. Landslides can be initiated

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