18. Which of the following statements is the most appropriate in relation to adolescence ?
( 1 ) Increase in the incidence of emotional upheavals
( 2 ) Carefree nature towards studies
( 3 ) Thinking starts reflecting in concrete actions .
( 4 ) Abrupt increase in the intelligence quotient
Ans-( 3 ) Thinking starts reflecting in concrete actions .
Reason:- The growth and development of brain during these years means that the child will begin to think in a more abstract, logical, organised and rational way.