Final answer:
The BMI needed to trigger and sustain normal reproductive functions in women is over 20.0.
Step-by-step explanation:
The BMI needed to trigger and sustain normal reproductive functions in women is over 20.0.
According to the body mass index (BMI) classification, a BMI ranging from 18-24.9 is considered normal weight, while a BMI of 25 or higher indicates overweight or obesity. Therefore, a BMI of over 20.0 is necessary for normal reproductive functions in women.