Question

identifying features caused by geosynclines
which image shows karst topography?

Explanation:

The question is about identifying features caused by groundwater, which relates to the subfield of Geography (under Natural Science). Groundwater - related features like caves, sinkholes, or water - eroded rock formations are often studied in Geography. The middle image likely shows a feature (such as a cave or a rock formation with groundwater - related erosion) that is characteristic of groundwater action, while the top image may be of a different geological feature and the bottom image (a waterfall) is more related to surface water flow.

Answer:

The Middle Graph