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Multiple Choice

The largest manmade lake in the world is

The key idea is comparing artificial reservoirs by their surface area. Lake Mead is a massive reservoir created by the Hoover Dam on the Colorado River, spanning across Nevada and Arizona. Because it covers a very large surface area when at capacity, it is commonly cited as the largest manmade lake in the world. The other options are not artificial reservoirs of that same size: Lake Powell is another large manmade reservoir, but its surface area is not larger than Lake Mead’s in standard references; the two remaining choices are natural lakes, not created by damming a river. So the best choice reflects the concept of largest artificial lake by surface area, which Lake Mead represents.

The key idea is comparing artificial reservoirs by their surface area. Lake Mead is a massive reservoir created by the Hoover Dam on the Colorado River, spanning across Nevada and Arizona. Because it covers a very large surface area when at capacity, it is commonly cited as the largest manmade lake in the world. The other options are not artificial reservoirs of that same size: Lake Powell is another large manmade reservoir, but its surface area is not larger than Lake Mead’s in standard references; the two remaining choices are natural lakes, not created by damming a river. So the best choice reflects the concept of largest artificial lake by surface area, which Lake Mead represents.