The best option to use as the basis for an Internet search of whether the levels of mercury in salmon make eating it unsafe I'd say would be option
B. Is salmon safe to eat?
William Zinsser's comments about writing as a profession perhaps dispel some myths about it. First, he says one needs to re-write sentences often many times to convey the designated meaning accurately and eloquently. Also, he says that one needs to stick to a schedule to be successful at writing like going to a job. Thirdly, writing is not easy and not necessarily fun at least at the time when the writing occurs (though in retrospect it may be considered to be fun-my opinion). Thus, we see that writing does not necessarily carry a lot of glory with it and is hard work and is a craft to work at to perfect it.