The features that are created by groundwater erosion and deposition include stalagmites, sinkholes and stalactites (Options A, B and D).
A stalagmite is a calcite formation (rock) formed from the floor of a cave due to the slow dropping of water-carrying mineral lime.
Sinkholes are depressions and/or holes in the ground that do not exhibit external surface drainage, they are formed by some type of collapse in the surface layer.
Stalactites are hanging formations of calcium carbonate that grow from the cave ceiling downward, they are found in limestone caves.
In conclusion, the features that are created by groundwater erosion and deposition include stalagmites, sinkholes and stalactites (Options A, B and D).
