Which of the following is a characteristic of the herbicide known as Endothall?

The characteristic of Endothall that is highlighted is its availability in both liquid and granular forms. This flexibility is significant for aquatic pest control because it allows for tailored application methods depending on the specific conditions of the water body being treated and the type of aquatic plants or algae that need to be controlled.

Using different formulations can enhance the efficacy of the herbicide, as certain forms may be more suitable for varying environmental conditions or specific aquatic environments. The liquid form can provide quick uptake and dilution, while the granular form can be more effective in providing a longer residual effect in the sediment or when targeting specific areas.

Other characteristics mentioned, such as effectiveness strictly in saltwater or cool water, do not accurately represent Endothall’s application. Additionally, although Endothall is designed to be used in aquatic systems, it is not entirely non-toxic to all aquatic invertebrates; toxicity depends on concentration and exposure. Therefore, the option regarding its availability in both liquid and granular forms accurately reflects a key feature of Endothall, making it the correct choice.