Which one of the following characteristic features is prominent among…

Concept: Adolescence is the developmental stage between childhood and adulthood whose central task is forming a personal identity. Classic descriptions (Hall's 'storm and stress', Erikson's identity-vs-role-confusion) treat the striving for autonomy and the questioning of, or revolt against, established authority as its defining emotional features.

Applying this to the question:

• Search for identity and autonomy: adolescents test and define who they are, so challenging parents or established rules becomes common.

• Rebellious / defiant behaviour: arguing, testing limits, and the strong pull of the peer group produce visibly rebellious tendencies.

• Cognitive growth: the emerging capacity for formal (abstract) reasoning lets them question rules and beliefs they once accepted.

Contrast with the other choices:

• High concentration — attention at this age is variable and distractible, not steadily high.

• Good commitment — still exploring roles, so commitment is shifting and situational, not firm.

• Sympathy to everyone — adolescents are typically self- and peer-focused, so sympathy is selective, not universal.

Result: Among the options, 'Freedom and Revolt feeling' is the prominent and expected characteristic of adolescence.