the answer is: B.Drowning in underground water
According to OSHA, caught-in or Caught between hazards refers to fatalities that resulted in workers being trapped between two or several things. When you are drowned, you the rescue workers could technically still move around the water area without worrying any collapse might happen, which is why it is categorized differently from caught in or caught between hazards.
Plants, animals, culture, human populations, technology, and ideas between the Americas and the Old World in the 15th and 16th centuries
D. The federal government would use its powers to protect, not threaten individual liberties
People used the telegraph to send messages via Morse Code. Which was a variation of taps on a small pad sending electronic pulses that would make a beeping sound. There would be someone on the other end that would listen to the pulses and write them down into words