Some advertisers offer certain consumers home computers free of charge.
Information
Some advertisers offer consumers a home computer free of charge.
(Why?) The computer plays ads while the user is on it, and the computer collects information about the user's browsing patterns and passes that on to advertisers who can then send more targeted ads.
causal (because of / result) The advertisers can afford to offer the computers for free because of the increased sales that result from this precise ad-targeting.
Evaluate
Whenever we're reading Inference paragraphs, we know our goal is to find any facts that can be combined or synthesized. Specifically, we're looking out for Conditional, Causal, Math-y, or Pivot wording.
This paragraph didn't have any of that type of language until the final sentence, which is both Causal and Math-y.
In fact, since there are two causal phrases in that last sentence, we could even concoct a little Causal Chain.
computer advertisers increased can afford collects ⇢ receive & ⇢ sales from ⇢ to offer the browsing send back these users computer patterns targeted ads for free
Mathematically, we can say that increase in sales is enough to at least offset the cost of providing one of these computers to a consumer.
Goal
It's hard to predict what the answer will say. We want to look for a safely worded idea that feels derivable from what we read, and most likely it will reflect some aspect of that causal chain we sketched out.