Sage Pearce-Higgins Wrote:Using several different words for the same thing is a confusion tactic employed by the GMAT exam: assertion, conclusion, claim, main point all mean pretty much the same thing. Here, we want the 'main assertion'. You're right to identify two, your second one is the main assertion: it's the end of the line of the author's reasoning.
Answer E provides a trap. Customers can be loyal to a technology company, but that doesn't mean that they are loyal to individual products sold by that company. For example, I may be a loyal Apple customer, but that doesn't mean I'm going to keep buying the same old model once a newer one becomes available.
While I am not really convinced, I do see where you are going with this one. This is something I would just accept as gray. Let me just write the below for argument sake.
B) does not introduce a anything new to the argument to qualify as strengthening the argument. It simply states that consumers get to know of expected product launches through the media. Whether or not this impacts consumer buying behavior still remains suspect. One can claim that the author hypothesis that "
Once consumers hear about the new device, they may stop buying the one currently on sale", but this remains at best an individual opinion. I would not take it as a fact. Whether or not, B) strengthens the argument depends on how you view the above italicized statement. I view it as the author's assumption, so for me B) would not really strengthen.
E) is still closer, because it introduces something new that could potentially strengthen the argument. Being loyal to the company does not mean buying the same product over and over again. Taking the Apple analogy, it could mean that if I am looking to upgrade my iphone 8, and I have a great option in Samsung S9 available in the market, I would still not buy the Samsung phone, because my Apple loyalty will make me wait for a new iphone launch. This means that Apple wont lose out on a potential customer, just by deferring or delaying a product launch announcement.
I am not sure if all of this makes sense. But if I had to choose again, I'd still stick with E. I could be wrong, but I do feel strongly for it.