What is the deepest spot in the Atlantic Ocean at 28,374 feet?

The deepest spot in the Atlantic Ocean, known for its significant oceanographic importance, is indeed the Puerto Rico Trench. This trench reaches depths of approximately 28,374 feet, making it the deepest point in the Atlantic.

Located to the north of Puerto Rico, the trench is a tectonic boundary where the North American Plate is subducting beneath the Caribbean Plate. This geological activity contributes to the formation of such profound oceanic features. The Puerto Rico Trench is significant not just for its depth but also for its role in understanding plate tectonics and marine ecosystems found in the surrounding deep waters.

In contrast, the other options refer to locations that do not pertain to the Atlantic Ocean. The Mariana Trench is located in the Pacific Ocean and is the deepest oceanic trench in the world, while the South Sandwich Trench also lies in the Southern Atlantic Ocean, notably not as deep as the Puerto Rico Trench. Devil's Hole, on the other hand, is a deep water-filled cavern in Nevada and has no relevance to ocean depths. Therefore, the Puerto Rico Trench stands out as the correct answer for the deepest spot in the Atlantic Ocean.