This description relates to Mr. Stonecrop’s role in the main conflict of the story because Mr. Stonecrop, like a mountain, is intimidating and strongly holds his position against the people of Malaga Island.
Explanation:
Mr. Stonecrop is the Richest man of the town, wants to turn Malaga Island into a tourist spot. He is described a strong and extremely intimidating person that's the reason why the comparison with a mountain is more than perfect since it is immobile, it is impossible to destroy, and more importantly has an impressive visual presence and size.
The compound subject is "Young Juan and his father." Both Jaun and his father are the subjects of the sentence, but because there are two of them it means there is a compound subject.
