Final answer:
The demand for office visits to the physician is not affected by a change in the price of an office visit. The correct answer is option c.
Step-by-step explanation:
The correct answer is c. A change in the price of an office visit.
The demand for office visits to the physician is influenced by factors such as availability of alternative treatments, insurance coverage, and the patient's perception of the need for medical care. However, changes in the price of an office visit itself do not directly affect the demand for it.
For example, if the price of an office visit increases, some patients may choose to forgo the visit or seek alternative forms of medical advice, such as telemedicine consultations. However, the overall demand for office visits is not likely to significantly decrease or increase solely because of a change in the price of the visit.