Final answer:
Smaller sand grains are carried as suspended sediment, while larger grains are transported as bedload.
Step-by-step explanation:
Smaller sand grains are transported as suspended sediment, while larger grains are transported as bedload. Suspended sediment refers to particles that are carried by the flow of water, but do not settle at the bottom. These particles can be transported for long distances in rivers or other bodies of water. Bedload, on the other hand, refers to larger particles that are too heavy to be carried in suspension, so they roll, slide, or bounce along the riverbed or seafloor.