Which suspension type includes a coil spring attached to the shock absorber?

The MacPherson strut suspension system is notable for its design that combines a shock absorber and a coil spring into a single, compact assembly. This type of suspension is widely used in front-wheel drive vehicles and serves to support the vehicle's weight while also allowing for wheel movement to absorb road irregularities.

In this arrangement, the coil spring wraps around the shock absorber, which is integral to the suspension's functionality. This configuration not only helps reduce the number of components needed but also simplifies the vehicle's overall design and can enhance handling by allowing for better control of the wheel's motion. The efficiency and space-saving nature of the MacPherson strut have contributed to its extensive use in automobile manufacturing.

Other suspension types mentioned in the question serve different purposes or have different component arrangements. For instance, twin I-beam suspension is recognized for using two beams that allow for an independent wheel movement but does not utilize a coil spring and shock absorber in the same way. SLA (Short Long Arm) suspension involves upper and lower arms with separate components for shock absorbers and springs. Multi-link suspension relies on multiple arms to manage wheel motion without integrating the spring and shock absorber as directly as in the MacPherson design. Hence, the correct response accurately reflects the