Question

human kidneys are located
on each side of the esophagus
around the level of the waist
at the base of the brain
in the chest cavity

Explanation:

The esophagus is part of the digestive system and the kidneys are not located near it. The base of the brain has structures like the pituitary gland, not kidneys. The chest cavity contains organs like the heart and lungs. Kidneys are located around the level of the waist (retroperitoneal space, on either side of the spine, around the lumbar region).

Answer:

Around the level of the waist