In order to be classified as morbidly obese, an adult must have a BMI of ________. Psychology In order to be classified as morbidly obese, an adult must have a BMI of ________. a. less than 25 b. 25-29.9 c. 30-39.9 d. 40 or more Answer: d. 40 or more Learn More : Share this Share on FacebookTweet on TwitterPlus on Google+