Which geological feature is associated with the larger, stable regions of the earth's crust?

Cratons are indeed the correct choice in this context. They are large, stable segments of the Earth's crust that have survived the cycles of tectonic processes for billions of years. Essentially, cratons form the foundational blocks of continents and are characterized by their thick crust and ancient geological history. They are typically located in the interiors of tectonic plates, away from the more geologically active margins where mountain-building and seismic activities might occur.

Cratons are also important because they often contain significant mineral resources and provide critical insights into the early history of the Earth’s geology. Their stability allows them to remain largely unchanged over geological time, making them valuable for understanding the processes that have shaped the planet.

Other geological features like ridges, mountains, and valleys do not fit the description of larger, stable regions of the Earth's crust. Ridges and mountains are associated with tectonic activity, such as the collision and divergence of plates, while valleys typically form in response to erosion and are often temporary in geological terms.