Answer: The human action that will have a negative environmental effect on future generations is D. Rapid human population growth.
Explanation: Rapid human population growth can lead to increased consumption of natural resources, increased pollution, and destruction of habitats. As the population grows, more resources are needed to sustain it, which can lead to overuse and depletion of resources, such as water, energy, and land. Additionally, rapid population growth can lead to increased pollution, such as air and water pollution, and destruction of habitats, such as deforestation and urbanization. These environmental problems can have significant negative effects on future generations, including decreased quality of life, health problems, and ecological imbalance.