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Which of the following factors are associated with the behaviour of sand mass during earthquake to cause liquefaction? 1. Number of stress cycles 2. The frequency, and amplitude of vibration of waves generated by an earthquake 3. Characteristics of sand 4. Relative density Select the correct answer using the codes given below :

1, 2 and 3
1, 2, 3 and 4
2 and 4
3 and 4

Correct Answer: 1, 2, 3 and 4

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