Final answer:
A patient is considered morbidly obese when their BMI is 40 or more, corresponding to being 40% above their ideal body weight.
Step-by-step explanation:
A patient is considered morbidly obese when their body mass index (BMI) is 40 or more. Morbid obesity is diagnosed when a person has a BMI ≥ 35 kg/m² with obesity-related health problems, or when a person's BMI is ≥ 40 kg/m² but < 45 kg/m².
Specifically, a BMI between 25 and 29.9 is defined as overweight, and a BMI of 30 or higher is considered obese. Thus, the answer to the question would be option (d) 40% above ideal body weight, which corresponds to a BMI of 40 or more.