Ataste receptor is sensitive to dissolved chemicals but not to pressure or photons
a. the neuron resting membrane potential varies depending on the receptor
b. each receptor type exhibits receptor
specificity
c. the other stimuli only interact with taste receptors at higher voltages
d. none of the above

b. each receptor type exhibits receptor  specificity.

Explanation:

             A taste receptor is a kind of receptor which facilitates tastes in our mouth. The tongue contains a cluster of receptor cells called the taste buds which mediates the taste to our brain. Mainly these taste receptors are of four types.

            When we eat food, the chemicals in the food or the food molecules dissolves with saliva present in the mouth and bound to the taste receptors in our mouth.

            Each taste receptor in our tongue has its own quality of belonging to a particular subject. In other words, it has its own receptor specificity. So they are not sensitive to pressure or photons.

Hence the answer is ---

b. each receptor type exhibits receptor  specificity.

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