Answer:
C. Cheyenne
Explanation:
The Cheyenne tribe established their nation in the land that now belongs to the state of Montana. Due to the information contained in the question, we know that horses played a valuable role in the life of Deleep's tribe. This was true because of the vast distances the Cheyenne had to cover. We also know that buffalo inhabited the same area as Deleep's tribe. The geographic location of the Cheyenne nation corresponds well with the range of the bison.
The tiny, solid particles you find in the atmosphere serve as cloud condensation nuclei.
You see, in order for water to condense, the water must have a direct object, grammatically speaking.
<span>Your answer: Tiny, solid particles in the atmosphere play a role in cloud formation by providing the object upon which water may condense to form clouds.</span>