Final answer:
The total sediment load of a stream includes bed load, dissolved load, and suspended load, so the correct answer is D) All of the above.
Step-by-step explanation:
The total sediment load transported by a stream is comprised of three types: bed load, which consists of particles that roll, slide, and bounce along the bottom of the stream bed; dissolved load, which refers to the ions that are carried in solution; and suspended load, which is made up of fine particles that are carried within the water column. Therefore, the correct answer to this question is D) All of the above. Each type contributes to the overall load that a stream can transport, depending on various factors such as the speed of water flow, availability of materials, and riverbed slope.