Questions

A software developer called Satoshi Nakamoto proposed bitcoin, which was an electronic payment system based on mathematical proof. The idea was to produce a currency independent of any central authority, transferable electronically, more or less instantly, with very low transaction fees. Bitcoin’s most important characteristic, and the thing that makes it different to conventional money, is that it is decentralized. Bitcoin is created digitally, by a community of people that anyone canjoin. Bitcoins are ‘mined’, using computing power in a distributed network.This network also processes transactions made with the virtual currency, effectively making bitcoin its own payment network.The bitcoin protocol –the rules that make bitcoin work –say that only 21 million bitcoins can ever be created by miners. However, these coins can be divided into smaller parts (the smallest divisible amount is one hundred millionth of a bitcoin and is called a ‘Satoshi’, after the founder of bitcoin). Bitcoin stores details of every single transaction that ever happened in the network in a huge version of a general ledger, called the blockchain.

Ans. C.
The answer is the ‘vilest thing that can be done by a person.' Vile/vilest means extremely unpleasant. Option A: A singular thing is being talked about (indicated by ‘is’) hence, things can’t be used. Option B: ‘is’ indicates singular activity, hence things can’t be used.
Option C: It makes the sentence grammatically and structurally correct.

In continuance of the several initiatives under taken by Pension Fund Regulatory and Development Authority (PFRDA) during the last few years to increase the pension coverage in the country, PFRDA has now increased the maximum age of joining under NPS-Private Sector (i.e. All Citizen and Corporate Model) from the existing 60 years to 65 years of age.

Now, any Indian Citizen, resident or non-resident, between the age of 60-65 years, can also join NPS and continue up to the age of 70 years in NPS. With this increase of joining age, the subscribers who are willing to join NPS at the later stage of life will be able to avail the benefits of NPS.