Two students studying physiology taste a known bitter substance, and both report sensing bitterness. they then sample another substance. student a reports sensing both a bitter taste and a salty taste, but student b reports only a salty taste. what is the most logical explanation?

It seems that you have missed the necessary options for us to answer this question so I had to look for it. Anyway, here is the answer. Based on the given scenario above, the statement that would be the most logical explanation is this: Student A has a protein receptor capable of detecting a bitter molecule found in that substance, whereas student B lacks that particular protein receptor. Hope this helps. 

The haitian revolution was the result of a long struggle on the part of the slaves in the french colony of st. domingue, but was also propelled by the free mulattoes who had long faced the trials of being denoted as semi-citizens. this revolt was not unique, as there were several rebellions of its kind against the institution of plantation slavery in the caribbean, but the haitian revolution the most successful. this had a great deal to do with the influence of the french revolution, as it to inspire events in haiti. the haitian revolution would go on to serve as a model for those affected by slavery throughout the world.