Raul is making potato soup. His roommate tastes it and tells Raul it is great, but Raul thinks it needs more salt. He adds just a little salt but doesn't think that he has added enough because he doesn't detect a difference. However, his roommate tastes it again and tells Raul that the soup is now perfect, with just the right amount of salt. Which statement best describes this situation?
◦
Raul's roommate has a higher absolute threshold than does Raul.◦
Raul has more taste cells on the back of his tongue than does his roommate.◦
Raul is a nontaster.◦
Raul's roommate can detect a smaller just noticeable difference than Raul can.
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