Your throat is dry, and you want the last cough drop in the box to last a long time in your mouth. what should you do?

The cough drop shall be taken in such a way that it has high surface-to-volume ratio

Explanation:

In order to maintain a large surface-to-volume ratio, the cough drop must be taken in a way that its entire volume is higher than the surface area occupied by it. This can be achieved only by taking cough drop all at once so that its volume remain higher than the surface area.

The higher is the surface-to-volume ratio, the lower is the dissolution of any substance, thus the cough drop with high surface-to-volume ratio will dissolve slowly and hence it would last longer than usual.

the answer that best describes the relative refractory period in the neuron is the resting membrane potential is restored, but concentrations of sodium and potassium are not restored to their original state.

the refractory period is the time during which another stimulus given to the neuron will not lead to a second potential. thus, because na+ channels are inactivated during this time, additional depolarizing stimuli do not lead to new action potentials.  

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