Which of the following is a cause of acute renal failure?

Acute renal failure, also known as acute kidney injury, can occur due to various factors, and one of the significant causes is blood loss. When there is a substantial loss of blood volume, such as from severe trauma, surgery, or significant internal bleeding, the kidneys may not receive sufficient blood flow. This reduction in perfusion can lead to ischemia, where kidneys are deprived of oxygen, ultimately causing kidney cells to sustain damage and resulting in impaired kidney function.

This emphasizes how crucial adequate blood flow is for kidney health. The kidneys depend on a consistent and sufficient blood supply to filter waste effectively. If blood flow is compromised, the kidneys cannot perform their vital functions, leading to acute renal failure.