Concept:River transportation refers to the ways a river carries its load of eroded material. The main processes are suspension, solution, saltation, and traction.
Explanation:In suspension, fine particles such as silt and fine sand are carried within the flowing water without touching the riverbed.
Saltation involves particles bouncing along the riverbed, while traction is the rolling or dragging of larger stones along the bed.
Solution transports dissolved minerals in the water.
Now examine the given options: attrition is the breakdown of rock particles caused by collisions during erosion, and abrasion is the scraping of the riverbed by these particles. Deflation is the removal of loose surface material by wind. All three are erosion processes, not transportation.
Thus, only suspension is correctly described as a process of river transportation.
Answer:D. Suspension