D. Adoption predominantly western businesses standards
<u>Answer:</u>
Alluvial fans are evidence that the Death Valley is a tectonically active region.
<u>Explanation:</u>
- Alluvial fans can be only formed by the slow and gradual depositional action of a river.
- But for an alluvial to be formed, it is primarily necessary for the river to continuously carry and deposit sediments for a long period of time.
- The supply of sediments done by the Death Valley in California provides evidence that it is a tectonically active region.
