Answer:
This quotation is from the beginning of Chapter I, “Into the Primitive,” and it defines Buck’s life before he is kidnapped and dragged into the harsh world of the Klondike. As a favored pet on Judge Miller’s sprawling California estate, Buck lives like a king—or at least like an “aristocrat” or a “country gentleman,” as London describes him. In the civilized world, Buck is born to rule, only to be ripped from this environment and forced to fight for his survival. The story of The Call of the Wild is, in large part, the story of Buck’s climb back to the top after his early fall from grace. He loses one kind of lordship, the “insular” and “sated” lordship into which he is born, but he gains a more authentic kind of mastery in the wild, one that he wins by his own efforts rather than by an accident of birth.
Explanation:
The author could be referring to a cage to describe the feelings of the person's life. using the word cage to identify the emotions from the person. Maybe the person, the author is writing about feels like he or she is stuck in the circumstances of everyday life referring to a cage. He or she could be dealing with tough situations and they could be feeling trapped like in a cage. The author could be describing the patterns of the person's way of making decisions. which hinders them and causes them to make wrong choices That keeps them stuck in a cage emotionally.