Which of the following is NOT a factor influencing airway resistance?

Airway resistance is primarily influenced by factors that affect the airflow through the respiratory passages. The diameter of the bronchioles plays a crucial role, as narrower passages increase resistance to airflow. Surface tension is also significant as it can affect the alveoli and therefore impact airflow during breathing.

Body temperature does not directly influence airway resistance. While it can have indirect effects on respiratory rate and efficiency, and can affect the viscosity and density of air, it is not a primary factor in the mechanical resistance to airflow in the airways.

Pulmonary compliance, which refers to the lung's ability to stretch and expand, influences how easily air can be taken into the lungs but does not directly alter the resistance of the airways themselves. Therefore, among the options presented, body temperature is the factor that does not directly influence airway resistance, making it the correct selection in this context.