Final answer:
High-tension ignition shielding reduces radio interference by minimizing the electromagnetic radiation emitted by the ignition system.
Step-by-step explanation:
High-tension ignition shielding reduces radio interference by minimizing the electromagnetic radiation emitted by the ignition system. When the engine's spark plugs fire, they create a burst of electrical energy that generates electromagnetic waves. These waves can interfere with the operation of nearby electronic devices, including radio receivers. The high-tension ignition shielding consists of a metal cover or shield that surrounds the ignition components, such as the spark plugs and distributor. This shield acts as a barrier, preventing the electromagnetic waves from escaping and reducing the amount of radio interference produced.