Select the most appropriate option to fill in blank no. 3.
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. advancement.
In the context of the passage, "advancement" aligns with the purpose of the Constitution's provisions and the proposed amendment. It signifies efforts aimed at improving the social and educational status of backward classes and marginalized communities. The word "advancement" accurately reflects the intention to uplift and empower these groups, in line with the broader goal of achieving equality. The other options ("containment," "postponement," "enhancement") do not convey the concept of progress or improvement as effectively as "advancement" does.