Final answer:
If a child's IQ is below 100, then his or her CA is below his or her MA.
Step-by-step explanation:
According to Figure 7.15, the majority of people have an IQ score between 85 and 115. An IQ below 100 indicates below-average intelligence. If a child's IQ is below 100, it means that their mental age (MA) is below their chronological age (CA). For example, if a child's IQ is 80, their mental age is below their actual age.