Group I lists the type of gain or loss of strength in soils. Group II lists the property or process responsible for the loss or gain of strength in soils.

$\begin{array}{llll} {} & \underline{\text{Group I}} & {} & \underline{\text{Group II}} \\ P. & \text{Regain of strength with time} & 1. & \text{Boiling} \\ Q. & \text{Loss of strength due to cyclic loading} & 2. & \text{Liquefaction} \\ R. & \text{Loss of strength due to upward seepage} & 3. & \text{Thixotropy} \\ S. & \text{Loss strength due to remolding} & 4. & \text{Sensitivity} \end{array}$

The correct match between Group I and Group II is:

1. $P-4, \: Q-1; \: R-2, \: S-3$
2. $P-3, \: Q-1; \: R-2, \: S-4$
3. $P-3, \: Q-2; \: R-1, \: S-4$
4. $P-4, \: Q-2; \: R-1, \: S-3$
in Others
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