In Unity, which type of joint would best suit a scenario requiring rotational movement?

A hinge joint is specifically designed to allow for rotational movement around a single axis, similar to how a door hinge works. This type of joint provides the ability to rotate objects back and forth, making it ideal for simulating mechanisms or characters that require swinging or pivoting movements, such as doors, levers, or character limbs.

In contrast, a spring joint introduces elasticity and allows movement with a restorative force but does not focus primarily on providing rotational movement. A fixed joint, as the name suggests, completely restricts movement, holding two objects rigidly together without allowing for any rotation or movement. A configurable joint offers a high degree of freedom and allows for various types of movement, including translation and rotation, but may be considered more complex than what is necessary for simple rotational movements.

Thus, for a scenario that specifically focuses on rotational movement, a hinge joint is the most suitable choice due to its design and intended functionality.