What is the recommended seating position for a patient when taking an impression?

The recommended seating position for a patient when taking an impression is either upright or in a supine position because these positions help ensure patient comfort and allow for optimal access to the oral cavity.

When a patient is in an upright position, it facilitates easier manipulation of the impression material and provides better visibility for the dental assistant or dentist. This can be especially important for capturing accurate details during impression-taking, which is crucial for creating dental models or custom appliances.

In a supine position, the patient is lying back, which can provide a stable and relaxed state, reducing anxiety and discomfort during the procedure. This position also allows the dental professional to work effectively without obstruction.

Combining upright and supine options caters to the needs of different patients and the types of impressions being taken, making option C the most comprehensive and suitable choice.