Which of the following accurately describes the movement required to operate a quick opening valve?

The correct choice is the one that indicates a small arc with a lever or wrench. Quick opening valves are designed for rapid operation and typically require only a limited amount of movement to be fully opened or closed. This small motion is usually achieved with a lever, which allows the operator to quickly transition from the closed to the open position and vice versa.

This design enhances responsiveness in applications where immediate flow control is vital, such as in emergency situations or processes that require rapid adjustments. By using a lever or wrench, the valve can be operated efficiently without the need for long rotations or excessive force. This makes it very effective in systems where precise and quick regulation of flow is necessary.

The other movements, like a slow full rotation or fluid motion with the wrist, do not accurately capture the mechanism of quick opening valves and are thus less suited for this specific operation due to the additional time and effort required. Similarly, a series of quick taps would not provide the necessary movement to effectively operate a valve designed for rapid opening and closing.