A more thorough explanation:

A nondelegable duty is a legal obligation that cannot be transferred to another person or entity. This means that the person or entity with the duty is responsible for fulfilling it, even if they hire someone else to help them. For example, a landlord has a nondelegable duty to maintain common areas of a building, even if they hire a service contractor to do the work.

Another example of a nondelegable duty is a duty to act, which is a responsibility to take action to prevent harm to another person. This duty can arise in various situations, such as a doctor's duty to provide medical care to a patient or a lifeguard's duty to watch over swimmers in a pool.

Nondelegable duties are important because they ensure that the person or entity with the duty is held accountable for fulfilling it, even if they try to pass it off to someone else. This helps to protect the rights and safety of others who may be affected by the duty.