English Grammar - Para Jumbles: 12 MCQs with Answers

The paragraph logically begins with sentence 2, which introduces the topic by stating that research is foundational to academic and scientific progress. Sentence 1 follows naturally, defining what this process actually involves, systematic investigation to discover or confirm facts, using the pronoun 'It' to refer back to 'research' mentioned in sentence 2. Sentence 3 then elaborates on the two forms this investigation can take, theoretical or applied, continuing the definition. Finally, sentence 4 concludes the paragraph by describing what happens after the investigation, documentation and peer review, making the correct coherent sequence 2, 1, 3, 4.

The paragraph should open with sentence 2, which introduces the core subject, blockchain as a distributed ledger technology. Sentence 4 logically follows, explaining the mechanism: how the ledger's copies are distributed across a network of computers, directly expanding on 'distributed ledger'. Sentence 1 then continues by naming the most common form of this distributed network, the peer-to-peer (P2P) system, using 'these' to refer back to the network of computers just mentioned. Finally, sentence 3 concludes by explaining the benefit of this decentralized structure, security and transparency through consensus, giving the coherent sequence 2, 4, 1, 3.