The best answer to this question would be (D) Two.
Caught-in injuries or caught-between injuries are defined as a type of injury that occurs when a worker’s body part is stuck between two or more objects, as defined in the question above.
These kinds of injuries can occur in workplaces, nature, and even your house, if you’re not careful. The other options aren’t as suitable because caved-in objects would not cause your body parts to be stuck, same goes with shifting objects. Hard objects would cause injuries, but not always the caught-in types.