Final answer:
The algae action plan aims to manage and prevent excessive algal bloom by reducing nutrient runoff that contributes to harmful algae growth and advocating for environmental measures such as wetland restoration.
Step-by-step explanation:
The correct answer to the student's question about the algae action plan is d) It aims to manage and prevent excessive algal bloom. This is because the primary goal of an algae action plan is to address the issue of excessive growth of algae, commonly known as algal blooms, in water bodies. These blooms can create environmental problems such as dead zones, where the high concentration of algae depletes oxygen levels, making it difficult for aquatic life to survive. An effective algae action plan would include strategies to reduce nutrient runoff, such as excessive nitrogen and phosphorus from fertilizers, which contribute to these harmful algal blooms. It may also advocate for the restoration of wetlands which can filter these nutrients before they make their way into bodies of water.