Final answer:
Henry and Bill were cursing the power of the Wild because of factors such as the unpredictable nature of the environment, lack of control over natural forces, and unforeseen consequences of exploration.
Step-by-step explanation:
The reason why Henry and Bill were cursing the power of the Wild was d) All of the above. This means that they were frustrated with the unpredictable nature of the environment, the lack of control over natural forces, and the unforeseen consequences of exploration. These factors can make navigating the wild and surviving in it challenging and dangerous.