Which patient position would be appropriate for a comfortable seated posture?

Fowler's position is indeed the correct choice for achieving a comfortable seated posture. This position involves the patient sitting with their back elevated at an angle, which typically ranges from 30 to 90 degrees. This elevation can ease breathing, improve circulation, and enhance comfort, particularly for individuals with respiratory difficulties, heart conditions, or who may be experiencing fatigue.

In Fowler's position, the alignment of the hips and knees is usually maintained, and the elevated backrest provides support that reduces strain on the back. It allows for a more relaxed posture compared to sitting upright without any support, which may lead to fatigue or discomfort over time. Therefore, Fowler's position is optimal for individuals who require some back support while still being seated.

The other positions listed, such as lying flat on the back or in a supine position, do not provide the needed support for a comfortably seated posture and are better suited for resting or sleeping rather than sitting.