What type of roller coaster is characterized by its smooth ride and advanced technology?

The correct choice is steel coaster, which is known for its smooth ride and advanced technology. Steel coasters utilize tracks made of steel, which allows for a more flexible and precise design compared to wooden coasters. This flexibility enables smoother transitions, sharper turns, and the ability to achieve higher speeds, leading to an overall more comfortable experience for riders. Additionally, advancements in engineering and technology allow for innovative features such as loop-the-loops, corkscrews, and more complex track layouts that enhance the thrill while ensuring safety.

Wooden coasters, while nostalgic and beloved for their unique feel, often result in a bumpier ride due to the nature of the materials used in their construction. Inverted coasters, which feature seats that hang below the track, can also provide thrilling experiences, but they are a specific type of steel coaster. Launch coasters, which use a mechanism to quickly accelerate trains to high speeds, are thrilling but not exclusively characterized by the smoothness associated with traditional steel coasters.