Karst topography is a distinctive landscape formed primarily by the dissolution of soluble rocks such as limestone, dolomite, and gypsum. This process is largely facilitated by the action of groundwater. Here's a detailed explanation:

1. Formation Process: Karst topography typically develops in regions underlain by limestone or dolomite. The carbon dioxide in rainwater forms a weak carbonic acid, which gradually dissolves the calcium carbonate in these rocks, leading to the formation of unique features.
2. Common Features: As the rocks dissolve, they create landscapes characterized by sinkholes, caves, underground rivers, and disappearing streams. These are all tell-tale signs of karst landscapes.
3. Correct Answer Justification: The question asks what karst topography is primarily associated with. Given its reliance on groundwater action in regions filled with soluble rocks like limestone or dolomite, the correct answer is "Groundwater action in limestone or dolomite regions." This process is distinct from other geological activities mentioned in the options.
4. Eliminating Other Options:
   • River meandering in alluvial plains: This is related to river dynamics and sediment deposition but not to karst development.
   • Glacial deposition in polar regions: This pertains to glaciation processes, not the formation of karst features.
   • Wind erosion in arid deserts: This is related to aeolian processes, which do not form karst landscapes.

Therefore, the defining factor of karst topography is groundwater action in limestone or dolomite regions, leading to the development of caves, sinkholes, and fissured landscapes.