The correct option is
D In schools, there is a state of mental confusion of teacher-student relationship.
As mentioned in the passage, nuclear families are self-centerd and their focus on human relationship is narrow.
Therefore, Option A is incorrect.
The community life weakens under the onslaught of individualistic and self centered living.
Therefore, Option B is incorrect as there is no mention of Urbanisation.
Teenagers and youths are increasingly seen to be beyond control and a world unto themselves.
Therefore, Option C is not the right answer as youths are no where adjusting.
Option C is correct because it is clearly mentioned in the passage that -"In the school also there is a disorientation of student-teacher relationship.'
It is a state of mental confusion between the two.