Final answer:
An unfavorable response due to prescribed medical treatment is known as an adverse effect, which contrasts with positive outcomes and is related to the concept of negative feedback, like the regulation of blood glucose.
Step-by-step explanation:
An unfavorable response due to prescribed medical treatment is known as a c) Adverse Effect. This denotes any unwelcome or harmful effects resulting from taking medication or undergoing a particular therapy.
In contrast to an adverse effect, a positive outcome would be the desired effect of the treatment, and a favorable response usually indicates a recovery or improvement in the patient's condition.
Adverse effects can range from mild to severe and may include symptoms like nausea, headaches, or more severe reactions like anaphylaxis. It is important for patients and healthcare providers to monitor for such effects to address them promptly. This is in line with the concept of negative feedback, an example of which in the human body is the lowering of blood glucose after a meal.