The correct answer is option ,
a) utilizes flowing water
c) loosens rock fragments
d) transports solid materials
Reason -
Soil erosion is caused by natural carriers especially the wind and water. Thus utilization of flowing water describes erosion.
In the process of erosion the solidified rock mass is weakened to break it into smaller pieces so that it can be easily carried off by the natural transporters. Also , water and air carries the solid material like loosened rock pieces, soil , plantation etc. with them when they blow at high speed.