____________ condition develops in saturated thick layer of loose fine sandy soils, when disturbed due to vibration from pile driving in adjoining area or by pressure of flowing water.

Correct option is C

Quicksand is a condition and not a soil type. This condition is created in saturated thick layers of loose fine sandy soils when disturbed either due to vibration, such as, from pile driving in the neighbourhood, or due to pressure of flowing water.