What type of defense is a cough reflex? A Nonspecific, secondary line of defense B Specific, secondary line of defense C Nonspecific, primary line of defense D Specific, primary line of defense What type of defense is a cough reflex? A Nonspecific, secondary line of defense B Specific, secondary line of defense C Nonspecific, primary line of defense D Specific, primary line of defense A Nonspecific, secondary line of defense B Specific, secondary line of defense C Nonspecific, primary line of defense D Specific, primary line of defense.