Which of the soil type has lowest PWP?

Answer: Option C

Sandy loam soil type has the lowest PWP.
PWP is a permanent wilting point or wilting point. It is defined as the minimum amount of water in the soil that the plant requires not to wilt. If the soil water content decreases to this or any lower point a plant wilts and can no longer recover its turgidity when placed in a saturated atmosphere for 12 hours.