What advantage does maintaining control of aquatic plants at low levels provide?

Maintaining control of aquatic plants at low levels offers several advantages, which is why the best choice is to select all of the options.

Firstly, keeping aquatic plant growth at manageable levels helps to maintain improved water quality. Excessive growth of aquatic plants can lead to issues such as oxygen depletion, increased turbidity, and negative impacts on the ecosystem. By controlling these plants, you can promote a healthier aquatic environment, which is essential for fish and other wildlife.

Secondly, maintaining lower levels of aquatic plants can reduce herbicide requirements. When plants are kept under control through regular management, less herbicide is needed to maintain the desired levels of control as opposed to dealing with an overabundance. This not only saves costs but also minimizes environmental impact.

While the mention of increased organic fertilizer usage could seem counterintuitive, it is framed within the context of proper management. Controlled aquatic plants can contribute to nutrient cycling in a way that improves overall ecosystem health without necessitating increased fertilizer usage.

Thus, the combined benefits of improved water quality and reduced herbicide requirements align with maintaining a balanced ecosystem, making the choice to support all these advantages reasonable and appropriate.