What does Lake Ontario signify based on its name?

The name "Ontario" is derived from the Iroquoian word that is commonly interpreted to mean "sparkling" or "beautiful" water. This reflects the lake's clear blue waters and picturesque natural setting, which have long been noted for their beauty. In this context, Lake Ontario symbolizes a significant natural feature that embodies beauty as suggested by its name. The interpretation of the name emphasizes the aesthetic qualities of the lake and the picturesque landscapes that surround it, aligning perfectly with the designation of it as "a beautiful lake."

While the other options provide different aspects that might be associated with a body of water, such as depth, historical significance, or recreational use, they do not capture the essence of the name itself. The focus on the beauty of the lake through its name is what makes the correct answer particularly relevant and meaningful.