What are the physical stimuli for the sense of taste

A)  the vibrations of molecules 
B)  organic substances that are insoluble in water 
C)  tactile stimulation of taste buds 
D)  chemical substances that are soluble in water

Taste Buds

Sensory organs on the tongue that are responsible for detecting and distinguishing the five elements of taste perception: sweet, sour, salty, bitter, and umami.

Organic Substances

Organic substances refer to chemical compounds that contain carbon-hydrogen bonds, typically associated with living organisms.

Chemical Substances

Materials with definite chemical compositions, which can be elements or compounds, involved in chemical processes.