Final answer:
A flat landscape, sand, and a white surface are characteristics of a salt flat, which points to option b as the correct answer.
Step-by-step explanation:
The correct answer to the question - What is pictured - a flat landscape, sand, and white? - is b. Salt flat. A salt flat is characterized by a vast, flat expanse covered with salt and other minerals, usually found in desert regions where water has evaporated and left behind a layer of salt.
This description matches the image, which presents a flat landscape and the whiteness typically represents the salt deposits found on salt flats, rather than the sandy landscapes that are commonly associated with options such as a desert plateau or badlands. An oasis, while also found in desert regions, is identified by the presence of vegetation and water, which does not match the description given.