What major river is known for carving the Grand Canyon?

The Colorado River is known for carving the Grand Canyon, which is a testament to the river's powerful erosional abilities over millions of years. This process involves the river cutting through layers of rock, removing material and creating the steep walls and intricate formations seen in the Grand Canyon today. The flow of the Colorado River, particularly during periods of higher water volume, has played a critical role in shaping this iconic geological feature.

The other rivers mentioned do not have this association with the Grand Canyon. The Mississippi River, known for its significant role in the geography and ecology of the central United States, is not linked to the Grand Canyon's formation. The Rio Grande, which forms part of the border between the United States and Mexico, also does not have any connection to the Grand Canyon. Lastly, the Sacramento River, primarily located in California, does not influence the Grand Canyon's geology. Therefore, the Colorado River stands out as the correct answer due to its direct impact on the Grand Canyon's creation and development.