Which of the following is NOT indicative of an absolute threshold

A)  the tick of a watch under quiet conditions at 6 metres 
B)  one drop of perfume diffused into the entire volume of a six-room apartment 
C)  the wing of a fly falling on your cheek from a distance of 1 centimetre 
D)  15 millilitres (1 tbsp) of sugar in 7.5 litres of water

Absolute Threshold

The minimum intensity of a stimulus at which it can be detected by an individual at least 50% of the time.

Perfume Diffused

The process of dispersing perfume particles into the air to create a pleasant aroma in the environment.

Watch

A portable timepiece designed to be worn on the wrist or carried, used to measure and display time.