Option 1: Reduced productivity
Incorrect -> Reduced productivity is described as a consequence of the problem, not the core trait itself.
Option 2: Social media addiction
Correct -> The passage explicitly states: “The most alarming characteristic observed in a young Indian student is social media addiction.”
Option 3: Pattern of instant indulgence
Incorrect -> This is explained as a behavioral pattern caused by addiction, not the primary trait.
Option 4: Increased alienation
Incorrect -> Increased alienation is mentioned as an outcome, not the defining characteristic.
Hence, Option 2 -> social media addiction - is the correct answer.