Self-study
Computer manufacturers and retailers tell us that the complexity involved in connecting the various components of personal computers is not a widespread obstacle to their use, but Conclusion this is wrong. █████████ ███ ███████ ███████████ ██ █████ ████████ █████████ ████ ██ ████ ████ ██████████████ ███ ███ ███████ ██ ███████ ███ ████████ ██ ███████ ██████████ ███████████████ ████ ███████████ ███████ █████ ████████ ████ ███ █████ █████ ███████████ ██ ████ ████████ ██████ █ ██████ ███ █████████ ███ ███████ █ ████████
Argument Summary
Computer manufacturers and retailers argue that the complexity of connecting PC components is not a widespread obstacle for users. The author disagrees, arguing that it is a widespread obstacle to the use of computers. Why? Because customers who install accessories must personally navigate mysterious jumper and switch specifications, and adding certain software can break other accessories that were already working.
Anticipation
Notice that the author's evidence is about what happens when customers install accessories themselves. For this to establish that complexity is a widespread obstacle, the author needs to assume that self-installation is actually widespread. If we learn the self-installation isn't widespread, then the difficulties the author describes wouldn't affect most people.
The author also assumes that the issues described, like configuring jumpers and software conflicts, genuinely rise to the level of complexity that constitutes an obstacle to use. So if we learn that people still readily and easily use personal computers despite the alleged installation difficulties, that would also weaken the argument.
4.
Which one of the following, ██ █████ ████ █████████ ███████ ███ █████████
a
Personal computer instruction ███████ ███████ ███████ ███ ████████ ██ ███ ███████ ███ █████████
Pay close attention to the word "purposes." A manual that explains what jumpers and switches are for is different from a manual that tells you how to configure them correctly for your specific setup. The obstacle the author describes is not that customers don't understand what jumpers/switches do or why we use them, but that the specifications for how to set them are "mysterious." Knowing the purpose of a jumper/switch doesn't tell you which setting satisfies the requirements of your particular combination of accessories. So (A) doesn't address the actual problem the author identifies.
b
Software for accessories ███ █████ ██ ████████ ███ █████
Even if the software is free, the author's concern is not about cost. The problem is that adding software for one accessory can disable another accessory. Whether that software is free or expensive doesn't change whether installing it causes conflicts.
c
Installing an accessory ████ ██████ █████████ ████ ██ ███ ███████████ ███████
This describes what may happen in the future, but the author's argument is about the current state of affairs. Whether installation will become easy later has no bearing on whether complexity is a widespread obstacle to use right now.
d
A personal computer ██ ███████ ████ ██ ████ ██ █ ███████ ████ ████████ ███████████ ███ ████ █████████████
The author's evidence focuses on customers who install accessories themselves. But if a personal computer is typically sold as a package that already includes accessories and comes with free installation, then this is evidence that the group of customers who have to personally navigate jumpers, switches, and conflicting software is not actually widespread. Even if the premise may accurately describe what self-installation is like, it wouldn't support the conclusion that complexity is a widespread obstacle if most customers are never in that situation to begin with.
e
Computer manufacturers rarely ████ ████ ███████ ████ ██ ████████████ ████ ████ ███ █████████ ████████ ██ ████████████
This, if anything, supports the author's argument. If manufacturers don't take into account ease of installation when designing their computer products, that's more reason to think users might face difficulties during installation.