Final answer:
In the event of a slump, typically the toe will move downward. This movement is caused by the slope material sliding along a curved or flat surface, often due to gravity and other contributing factors like water content and ground disturbances.
Step-by-step explanation:
When a slump occurs in geology, the toe, which is the lowest part of the slump, will typically move downward. This type of movement is due to the downward and outward movement of slope-forming materials, such as rocks, soil, and artificial fill, which are all part of a cohesive block of material. A slump happens when the material slides along a concave-upward or planar surface, primarily due to gravity and certain conditions like water saturation, erosion, earthquakes, or human activity, causing instability in the slope.
In cases of extreme fluctuation and continuing decline of slope stability, the likelihood and severity of slumps may increase. Although this information is interesting, it does not directly relate to this specific question about the slump's movement. Regarding economic fluctuations, such as the U.S. unemployment rate, while interesting, it also does not pertain directly to the geological event of a slump.