Final answer:
Creep is the mass movement that relates to the freeze-thaw cycle, causing very slow but consistent deformation of land features as the soil expands when frozen and moves downward upon thawing.
Step-by-step explanation:
The type of mass movement that exhibits very slow but constant movement closely associated with the freeze-thaw cycle is known as creep. This movement is generally imperceptible day-to-day but can be identified over time by the gradual deformation of land features, which can include curved tree trunks, bent fences or retaining walls, and the formation of terraces on slopes. Creep is influenced by the expansion and contraction of soil and rock as it freezes and thaws, with the vertical subsidence of the material during thaw contributing to the downward movement.