Which of the following tasks is prohibited for a non-veterinarian?

Making a diagnosis is a task that is exclusively reserved for licensed veterinarians due to the training and expertise required to assess and interpret an animal's health conditions. Diagnosing involves understanding complex medical issues, the underlying anatomy and physiology, and considering various differential diagnoses based on a comprehensive examination, lab results, and patient history. Only those who have completed a veterinary degree and have the appropriate licensing can legally diagnose medical conditions in animals.

In contrast, tasks such as performing minor wound care, assisting with examinations, and taking vital signs can often be delegated to veterinary technicians or other trained support staff. These roles are essential in veterinary clinics but do not require the same level of professional judgment as making a diagnosis, which can have significant implications for an animal's health and treatment.