Read this excerpt from The Call of the Wild For two days and nights Buck never left campnever let Thornton out of his sight He followed him about his work, watched him while he , saw him into his blankets at night and out of them in the morningBut after two days the call in the forest began to sound more imperiously than ever Buck's restlessness came back on him and he was haunted by recollections of the wild brother, and of the smiling land beyond the divide and the run side by side through the wide forest stretches. Once again he took to wandering in the woods, but the wld brother came no more, and though he listened through long vigils, the mournful howl was never raised How has Buck changed ? A He has become more anxious about the call from the wild B He has become less haunted by his dreams has become more loyal to all mankind D He has become less aware of his past life as an obedient pet

To determine how Buck has changed in the given excerpt from "The Call of the Wild," we can closely analyze the provided information. In the beginning, we learn that Buck never left camp and constantly watched over Thornton, showing his loyalty and attachment to him. However, after two days, Buck's restlessness returns, and he is haunted by memories of the wild and his wild brother. Buck starts wandering in the woods again, longing for the call of the wild. It is mentioned that the wild brother no longer comes to him, and despite his longing, the mournful howl is never heard.

Based on this analysis, we can conclude that Buck has become more anxious about the call from the wild. He is no longer content with staying in camp and being a loyal companion to Thornton. The memories and desires of the wild have resurfaced, indicating a shift in his mindset and a growing restlessness. Therefore, the correct answer is A) He has become more anxious about the call from the wild.