Final answer:
The most effective introduction for Nyla's essay on ocean conservation should focus on the consequences of overfishing and the unsustainability of current practices, rather than solely on plastic straws.
Step-by-step explanation:
Nyla is writing an introduction paragraph for an argumentative essay about ocean conservation. To effectively lead up to the claim, the most effective information to include would be context that directly supports the topic of ocean conservation and establishes the urgency or significance of the issue. This could be achieved by incorporating statements about the consequences of overfishing, the depletion of marine resources, and the environmental impacts of other forms of pollution besides plastic straws.
An example of such an introduction could mention the shared nature of ocean resources, the unsustainability of current fishing practices due to technological advancements, and the importance of establishing international rules to ensure the continuity of the ocean's ability to provide food and income for future generations. Highlighting the acute problems caused by overfishing and habitat destruction gives a stronger and more relevant lead into the topic of ocean conservation than focusing on plastic straws alone.