What happens to air when it is compressed in the brake system?

Answer: C — It becomes hot and forms condensation

When air is compressed in the brake system, the process leads to an increase in temperature due to the physics of gas compression. As air is compressed, the molecules are forced closer together, which increases their kinetic energy and, consequently, the temperature of the compressed air rises. This hot air can lead to condensation forming when the temperature of the air cools down upon expansion or when it comes into contact with cooler surfaces. This is particularly relevant in brake systems, where moisture can accumulate and potentially affect performance if not properly managed. Understanding that compressed air generates heat is crucial for ensuring the efficiency and safety of air brake systems.