If the paddlefish are hunted in excess, the population of paddlefish will decrease, which will have a cascading effect on the ecosystem. The correct answer is B. The decrease in paddlefish will cause a decrease in the predation pressure on zooplankton, resulting in an increase in the zooplankton population. However, the decrease in paddlefish will also cause a decrease in the food supply for the lampreys, which will result in a decrease in the lamprey population. This could have further implications for the ecosystem, as the lampreys may be important predators or prey for other species in the ecosystem. Additionally, if the human hunting continues, it may lead to the extinction of the paddlefish, which could have severe consequences for the ecosystem as a whole.