How did the electoral system artificially boost the victory of the Congress in terms of seats in India in the first few general elections?

By applying the first-past-the-post method

The correct answer is Option 3 - By applying the first-past-the-post method

The electoral system in India played a significant role in amplifying the extent of the Congress party's victory.
Despite not securing a majority of the votes, the Congress party managed to win three out of every four seats.
In the 1952 elections, for instance, the Congress party received 45 percent of the total votes but secured an overwhelming 74 percent of the seats.
On the other hand, the Socialist Party, despite obtaining over 10 percent of the votes nationwide, could only secure less than three percent of the seats.
First-past-the-post method of election system in India contributed to the disparity between the votes obtained and the corresponding seat allocation, ultimately boosting the Congress party's dominance.

The first-past-the-post (FPTP) system is also known as the simple majority system used in India. It declares the candidate with the highest number of votes in a constituency as the winner. FPTP is used in direct elections to the Lok Sabha and State Legislative Assemblies.