RHo(D) immune globulin can cause an abnormal breakdown of red blood cells. This effect can lead to life threatening blood clots or organ failure
Answer: The right answer is Cave-ins.
Explanation: Excavations and trenches are basically the man-made cuts inside the Earth's surface. These are made for multiple purposes such as mining or tunneling. One of the obvious risk while working in such excavations and trenches is cave-ins. It is basically collapse of that excavation or Trench. The roof of the mine collapses and people working under it get buried inside those excavations in trenches.
Treatment. Examination. Minor Surgery.
Well.. Usually no...
Unless they didn't sterilize or clean the tools used for the surgery.
Which would be quite the rare occasion...
good luck!