Which type of water feature might include characteristics such as sound and reflectivity?

The correct choice relates to static water features, which include bodies of water such as ponds, lakes, and reservoirs. These bodies of water can exhibit characteristics like sound and reflectivity due to their nature. For instance, still water in a pond can create a peaceful auditory experience with the gentle lapping of water against the shore, while its surface can reflect surrounding landscapes, creating visually striking effects.

In contrast, moving water features, such as rivers and streams, would primarily emphasize movement and flow rather than stillness, affecting their sound quality and reflecting properties differently. Constructed wetlands focus on ecological functions rather than the aesthetic qualities of sound and reflectivity. Groundwater, being beneath the earth's surface, does not typically provide any visual or auditory characteristics that can be perceived directly, further distinguishing it from static water features.