Final answer:
The rock most likely formed in a desert environment, specifically Desert Sand Dunes, reflecting the conditions of Death Valley in California, which is characterized by high temperatures and limited rainfall.
Step-by-step explanation:
The environment in which the rock shown in Death Valley National Park most likely formed is A) Desert Sand Dunes. Death Valley is located in Eastern California, in the northern Mojave Desert, and is known to be one of the hottest places on Earth, characteristic of a desert biome. The geological history of this area indicates that it was subject to conditions such as elevated temperatures, limited rainfall due to the rain shadow effect, and tectonic activities that signify the absence of environments like deep ocean floors or glacial moraines. Thus, the rocks in Death Valley would not exhibit features of formation in those conditions, making a desert environment the most plausible.