Which of the following statements about Lake Ontario is correct?

The statement that Lake Ontario has wind patterns that can cause significant wave action is correct. This is due to the lake's size and its geography, which allows for the development of strong winds across its open waters. These winds can create waves that pose hazards for small boats and influence water conditions. Moreover, the lake's interaction with atmospheric conditions can lead to choppy waters or even rough weather patterns that affect boating and fishing activities.

In contrast, while Lake Ontario is not the largest Great Lake, it is indeed one of them, and it does connect to the Atlantic Ocean via the Saint Lawrence River, making it not landlocked. Additionally, Lake Ontario does have islands, such as the Toronto Islands and the Thousand Islands.