How does a higher proportion of sand in soil generally affect its infiltration capacity?

Correct answer: The capacity increases

Correct answer: B, the infiltration capacity generally increases. Infiltration is the entry of water from the ground surface into the soil. Sand particles are relatively large, and sandy soil commonly has larger, more connected pore spaces than fine clay soil. These spaces allow rainwater to enter and move downward rapidly, so the soil usually has high infiltration capacity and low water-holding capacity. A is not the general result for sandy soil; very fine clay has small pores and often permits slower infiltration, although soil compaction, organic matter, crusting, and structure can modify the exact rate. C is incorrect because sand does not block all water entry. D is incorrect because particle size and pore arrangement directly affect infiltration. It is useful to distinguish capacity from retention: sand usually lets water in quickly but does not hold as much water as clay. Memory cue: large pores give sandy soil fast infiltration; small pores give clay greater retention but often slower infiltration.