Final answer:
The kidneys are vital organs in a pig's body, crucial for multiple functions, and are protected by the rib cage, which acts as a structural shield against physical harm.
Step-by-step explanation:
The kidneys are essential bean-shaped organs with many functions, including hormone production, mineral absorption, blood filtering, and urine production. In a pig's body, the kidneys are slightly protected by the ribs, which help to safeguard them from various injuries. Therefore, the correct answer is 1) Rib cage, which helps to protect kidneys within the pig's body by providing a structural shield from physical harm. Additionally, the kidneys are surrounded by fat, which offers further cushioning and protection.