Intelligence quotient is the number which represents the relative intelligence of a person. The IQ is calculated by calculating the ratio of the mental age of the person to the chronological age and then multiplying the ratio with 100 as 100 is assigned the average score of the average person.
In the given question since the ratio of mental to chronological age was mentioned therefore the Intelligence quotient is the correct answer.
Thus, Intelligence quotient (IQ) is the correct answer.
