Firefighting numbers among the deadliest professions....

Firefighting is a dangerous activity, and dangerous activities can sometimes kill people. I don't really have a problem with that wording. Reminds me of the expression "speed kills." I think B) is the best answer, because it's clear and concise.



That's always a valid question. Any Joe Smith or Suzy Johnson can write up a GMAT question--whether it's a good one is another matter entirely. That's why practice questions posted on the Internet should always be taken with a grain (or two) of salt. And let's not forget--even official GMAT questions have problems sometimes too. Unfortunately, it seems that some people, once they are told (correctly or incorrectly) that choice X) is the answer, will try to find any way under the sun to justify that choice, whether it actually makes sense or not.