Try it: identifying the main conclusion
What it tests: picking out the one statement every other sentence in the passage is working to support — the conclusion isn't always the last line.
Ministers have proposed requiring encrypted messaging services to build in access points so that law enforcement can read suspects' messages. This plan should not go ahead. Any deliberate weakness built into an encryption system can, in principle, be found and exploited by hackers as well as by police, since code cannot distinguish a warrant from a break-in. Criminals aware of the backdoor would simply migrate to unregulated foreign apps beyond UK jurisdiction, so the measure would do little to hinder serious offenders while leaving ordinary users more exposed. Several major technology firms have already warned they would withdraw services from the UK market rather than comply, risking thousands of jobs.
Which is the best expression of the main conclusion of the argument?
Reveal the correct answer & explanation
Correct answer: C
The passage states its position early — "should not go ahead" — and everything after that exists to support it. The backdoor-exploit point, the criminal-migration point, and the firms'-withdrawal point are all reasons for C, not conclusions in their own right. E is the classic trap: it's the final sentence, so it feels conclusive, but it's really just one more supporting reason. D overreaches — the passage objects to this specific backdoor plan, not to encryption regulation in general.


