What is the four-finger gripper type that closes with opposing fingers?

• A. Three-finger
• B. Four-finger
• C. Two-finger
• D. Five-finger

Answer: (B)

The thing being tested is how a gripper closes around an object using opposing fingers and what a four-finger arrangement offers. A four-finger gripper uses two opposing pairs of fingers that move toward the object from opposite sides, closing to form an enveloping, stable grip. This gives more contact area and a symmetric hold, which helps distribute force evenly, keep the object centered, and handle a variety of shapes—especially flat or square items—without slipping or rotating. Other options describe different finger counts and aren’t the same four-finger setup that closes with opposite fingers, so they don’t provide the same stable, enclosing grasp.