A low velocity fog applicator is held in an all-purpose nozzle by a bayonet joint. The applicator is prevented from rotating in the joint by __________.

Correct Answer: Option D — a spring-loaded catch

A spring-loaded catch engages a matching recess in the bayonet connection, positively locking the low-velocity water fog applicator to the all-purpose fire nozzle and preventing rotational displacement from high-pressure reaction forces during firefighting operations.