« on: November 15, 2007, 05:24:29 PM »
For the first one, B seems like a better choice because if the cattle can be raised on pastureland that is unsuitable for any other kind of farming, then the cattle can pretty much eat all they want without huting humans and since humans aren't being denied grains, grazing them on this land can't really be immoral.
That was my reasoning on this one, hope it makes sense.
The second one is a bit more difficult for me to explain but I'll try. It looks like his whole point is that people should exercise the muscles on both sides of the spine to maintain a healthy back. Then he goes on to say that balanced muscle development is needed for a healthy back. It seems to me that by recommending that people should exercise both sides, he must be assuming that this results in that balanced muscle development that is needed for a healthy back. In this context, B makes more sense to me. Furthermore, if you were to negate the answer choice, it would read "exercising the muscles on opposite sides of the spine unequally does not lead to unbalanced muscle development" which would undermine his point.
Hope that helped.
For the last one. I would've picked B but it's hard for me to explain why. I'm not even sure I'd be right.