The correct response is D. All of the above.
Each of the activities listed—burning fossil fuels, irrigation, and deforestation—can have negative impacts on the water cycle. Burning fossil fuels contributes to climate change, which can alter precipitation patterns and increase evaporation. Irrigation can change the distribution of water in the environment and affect local ecosystems. Deforestation disrupts the natural water balance, reduces transpiration, and can lead to alterations in local rainfall patterns. Therefore, all of these human activities negatively impact the water cycle.