To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video
Thanks for such a helpful video. Could you explain specifically how you knew the answer was B?
Well, I talk about the spceific content of the argument and its assumption here.
The theory underlying the choice is outlined beginning here.
There is also useful structural information here.
And we can be certain we've found the right answer based on the principles and practices discussed here.