Final answer:
Gustavo's growth indicators moved from the 25th and 50th percentile to the 15th percentile when transitioning from the WHO weight-for-length growth chart to the CDC BMI-for-age growth chart at age two years.
Step-by-step explanation:
When transitioning from the WHO weight-for-length growth chart to the CDC BMI-for-age growth chart at age two years, Gustavo's growth indicators moved from between the 25th and 50th percentile to the 15th percentile. This change in percentile classification may be due, in part, to changing from recumbent length to standing height measurements.