Final answer:
The correct answer is A, where being overweight is defined as having a BMI between 25 and 29.9. BMI is central to understanding body weight health risks.
Step-by-step explanation:
Overweight, a condition that is less serious than obesity, is defined as having a body mass index (BMI) between 25 and 29.9. This means that the correct answer to the question is A. 25; 29.9. An adult is considered obese with a BMI of 30 or higher. Understanding the BMI scale is crucial for identifying weight-related health risks. While a BMI between 25 and 29.9 is categorized as overweight, morbid obesity is characterized by a significantly higher BMI, typically 40 or more.