Final answer:
The sentence that illustrates third-person omniscient narration in The Call of the Wild.
Step-by-step explanation:
The sentence that illustrates that The Call of the Wild is in third-person omniscient narration is: "Buck did not read the newspapers, or he would have known that trouble was brewing, not alone for himself, but for everyone..." Third-person omniscient narration is when the narrator knows and tells the thoughts, feelings, and actions of multiple characters. In this sentence, the narrator has knowledge of what Buck did not know, indicating an omniscient perspective.
Learn more about third-person omniscient narration in The Call of the Wild