This para jumble is from Cat 2021 slot 2 , I have tried it 3 times but couldn’t figure it out?

Question

1. Look forward a few decades to an invention which can end the energy crisis, change the global economy and curb climate change at a stroke: commercial fusion power.
2. To gain meaningful insights, logic has to be accompanied by asking probing questions of nature through controlled tests, precise observations and clever analysis.
3. The greatest of all inventions is the über-invention that has provided the insights on which others depend: the modern scientific method.
4. This invention is inconceivable without the scientific method; it will rest on the application of a diverse range of scientific insights, such as the process transforming hydrogen into helium to release huge amounts of energy.

Jayant M · Accepted Answer

This parajumble becomes easier once you find which sentence introduces the central idea.

Sentence 3 clearly sets up the main point that the scientific method is the greatest invention
Sentence 2 explains how the method works through tests and analysis
Sentence 1 introduces a future invention, commercial fusion power, as an example
Sentence 4 says this invention is impossible without the scientific method

The mistake many make is trying to open with sentence 1 because it sounds dramatic. But starting with fusion power makes no sense unless the foundation of scientific method is already explained. Once you see that sentence 3 lays the theme and 1 is the example, the rest falls into place. The correct order is 3-2-1-4.

Shruti T · Answer

The paragraph is built around the idea that the scientific method is the most important invention because it enables other inventions. Sentence 3 is the best opening because it makes a bold claim that the scientific method is the &uuml;ber-invention. Sentence 2 supports this by explaining what the scientific method actually involves, describing how it uses controlled tests and observations to gain insight. Sentence 1 then moves to a future invention &mdash; commercial fusion power &mdash; which is framed as an example of something revolutionary. Sentence 4 wraps up the idea by saying that fusion power would not even be possible without the scientific method, linking back to the main point introduced at the beginning.
The key to solving this is realizing that 3 and 2 together explain the foundation, and 1 and 4 give a specific example of how that foundation enables a future breakthrough. That&rsquo;s why the correct order is 3-2-1-4.