Which of these conditions has been recognized as a disability under the ADA?

The Americans with Disabilities Act (ADA) defines a disability as a physical or mental impairment that substantially limits one or more major life activities. Morbid obesity is recognized as a disability under the ADA because it can significantly affect a person's ability to perform major life activities, such as walking, standing, or engaging in daily tasks. The classification of morbid obesity as a disability comes from the fact that it can lead to serious health issues and may severely limit an individual's functional capacity, necessitating accommodations in various aspects of life, including work.

In contrast, conditions like a common cold, minor allergies, or the seasonal flu generally do not meet the criteria for a disability under the ADA. These conditions are typically temporary and do not substantially limit major life activities in the same way that morbid obesity does. Thus, morbid obesity stands out as the condition that can be recognized as a disability under the ADA.