That would be mass.
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Here is the answer that would best complete the given statement above. Autonomic nervous system reactivity in humans appears to be e<span>xplaining the acquisition of phobias and other human behaviors. Hope this is the answer that you are looking for. Have a great day ahead!</span>
Answer:
A.) Smell is a chemical sense.
B.) Odorant molecules dissolve in mucus before stimulating a receptor
C.) Olfactory receptors have hairs on the apical surface that respond to stimuli