逻辑一题

Iljiajia

俺也想不大明白？

切尔西

here's the clincher when you have to decide something like this: pick the choice that stays as CLOSE to the logic / conclusion of the passage as possible.

the problem with choice c is that it introduces a new consideration - "superiority" - that is COMPLETELY unaddressed in, and therefore irrelevant to, the passage. you have to make all kinds of assumptions to push this answer choice into even the darkest corners of the argument's scope: in particular, (1) you have to introduce the assumption that consumers make tech purchasing decisions based on "superiority", AND (2) even if you allow this assumption (note that allowing random assumptions is never a good idea), you still have no idea how the "superiority" angle is going to affect purchasing decisions! you'd have to introduce even more assumptions along the lines of "the new version is superior / inferior to the old version".
bad bad bad.

you are right that choice b requires the assumption that media coverage of new devices will follow the official announcement of those devices. this may be somewhat of an assumption, but it's absolutely trifling relative to the enormous assumptions detailed above for choice c.
what's more, this assumption is clearly relevant to the argument. don't forget that the vast majority of wrong answers on weaken/strengthen problems are wrong because they're totally irrelevant to the argument. if you can find a weaken/strengthen answer choice that is CLEARLY related to the information in the passage, then you're halfway there!

one more consideration: your reasoning against choice b is weaker than it may at first seem. while it may be true that the media publish speculative reports about "leaked" products, (1) you have to assume that that happens, always a dangerous thing, and (2) for average products, the amount and effect of such speculative coverage is almost certainly very, very small.
the fact that you used the iphone - a very exceptional device, one that defies just about every market norm out there in some way - as your example is telling: such reasoning is unlikely to extend to run-of-the-mill technological products such as the ones presumably treated by the passage.

sunluning0

我怎么觉得B是消弱阿

切尔西

这个我也没有看明白是怎么加强的，但是人家说这几个选项里这个是最好的，哎。。。