Option 1 -> The passage states unregulated use causes "lack of concentration" and "reduced productivity," not increased.
Option 2 -> The passage mentions "increased alienation" rather than better social interaction skills.
Option 3 -> The passage explicitly states unregulated usage causes "serious negative impacts on mental health, academic performance, and emotional well-being" and leads to "bad academic output, and mental illness conditions."
Option 4 -> The passage does not mention improved self-image or confidence as outcomes of unregulated social media use.
Hence, Option 3: decline in emotional and mental health and academics -> The passage directly addresses this, stating that unregulated social media usage has "serious negative impacts on mental health, academic performance, and emotional well-being" and that 27% of teenagers develop dependency features leading to "lack of concentration, bad academic output, and mental illness conditions" -> correct