The correct answer is D. away.
People in large cities are often cut away from nature. This is because cities are built up with buildings and roads, which take up space that would otherwise be used for natural areas. Additionally, people in cities often have busy lifestyles that don’t allow them to spend much time outdoors. As a result, they may not have as much opportunity to connect with nature as people who live in rural areas.
The other options are not as accurate. Option A, cut down, could refer to the act of cutting down trees. However, this is not the main reason why people in large cities are cut off from nature. Option B, cut out, could refer to the act of removing something from a larger whole. However, this is not the main reason why people in large cities are cut off from nature. Option C, cut off, could refer to the act of preventing someone from accessing something. However, this is not the main reason why people in large cities are cut off from nature.