First of all I don't know how it ended up in 45% difficult questions ...... It's pretty easy, you can just eliminate the first four wrong options and all you have left is option E... and for the explanation it's given below
Correct Answer: E. At least some kinds of sustainable software are not flexible.Explanation:The argument suggests that software engineers should focus on flexibility rather than sustainability, concluding that software should not be made sustainable. This reasoning assumes that sustainability and flexibility are at odds—specifically, that sustainable software is not flexible. Therefore, the assumption on which the argument depends is that at least some sustainable software lacks flexibility.
Reasons for Eliminating Other Options:
A. A large number of engineers in the field of information technology want to produce sustainable software.Eliminated: The argument does not depend on how many engineers want to produce sustainable software. The focus is on whether sustainable software should be made, not on the preferences of engineers.
B. Some of the students developing sustainable software are already or will soon be engineers in the field of information technology.Eliminated: The future careers of students are irrelevant to the argument. The conclusion is about whether software should be made sustainable, not about who is developing it.
C. If some action is not taken immediately, then sustainable software will become the primary product developed by software suppliers.Eliminated: The argument does not assume that sustainable software is on the verge of becoming dominant. The concern is about flexibility, not about the prevalence of sustainability.
D. Specific users requiring sustainable software constitute a small proportion of the software industry.Eliminated: The proportion of users who need sustainable software is not relevant to the argument. The argument is not based on demand but rather on the flexibility of the software.