Final answer:
The correct answer is c. Intelligence quotient (IQ) gives an indication of a child's intelligence by comparing her score on an intelligence test to the scores of average children her same age.
Step-by-step explanation:
The correct answer to the question is c. Intelligence quotient (IQ) gives an indication of a child's intelligence by comparing her score on an intelligence test to the scores of average children her same age. IQ is a numerical measure of intelligence that is calculated based on an individual's performance on standardized tests. It is calculated by dividing a person's mental age (the age at which their performance matches the average performance of their age group) by their chronological age (their actual age), and then multiplying by 100 to get a percentage.