15. which of the following statements is best
supported by the information in the graph?
o a. pebbles are able to be moved at slower
stream velocities than silt particles.
o b. streams are only able to move particles
less than 1 cm in diameter, and all other particle
sizes can only be moved in rivers.
o c. particle diameter controls stream velocity
across all scales.
o d. small increases in stream velocity can lead
to many changes in particle size at slower
velocities, but changes in larger particle sizes
require more significant changes at higher
velocities.

D is the answer to the question

The scientific method is a series of steps followed by scientific investigators to answer specific questions about the natural world. it involves making observations, formulating a hypothesis, and conducting scientific experiments.the steps of the scientific method are •observation-the first step of the scientific method involves making an observation about something that interests you•question-once you've made your observation, you must formulate a question about what you have observed. •hypothesis-once you've made your observation, you must formulate a question about what you have observed. •experiment-once you've developed a hypothesis, you must design and conduct an experiment that will test it.•results-the results are where you report what happened in the experiment. •conclusion-the final step of the scientific method is developing a conclusion.i hope that this you : )