- Aassumes that each crew has given an honest account of what it did
- Bdoes not state how many boat crews were at sea when the cyclone struck
- Cdraws its evidence wholly from crews that came through, when a crew that turned the bow into the wind and was lost could not be there to say so
- Dtreats the practice of one association's members as the practice of fishermen everywhere
Step-by-Step Solution
The bulletin questions the survivors and none but the survivors, and the answer it wants — that the practice sometimes fails — could only come from crews who are not there to give it. Evidence gathered in a way that shuts out every possible refutation proves nothing at all. Honesty is not in doubt, since the crews are describing what they did; the number at sea would matter only if the trouble were too few cases, and it is not; and the bulletin generalises about a practice in a storm, not about the habits of one association.
Answer: C) draws its evidence wholly from crews that came through, when a crew that turned the bow into the wind and was lost could not be there to say so