A student compiling information about uncertainty bands on a projection graph took the following notes: • A graph shows a central line for projected river flow through 2080. • A shaded band surrounds the line. • The band is narrow near the present and widens farther into the future. • A caption states that the band represents a range of plausible values. • Historical observations appear as dots before the projection begins. • The graph uses the same vertical scale throughout. The student's purpose is to provide an example supporting the idea that a visualization can communicate both an estimate and increasing uncertainty. Which choice most effectively accomplishes this purpose?