Ethan is investigating a snails response to stimuli. he put the following substances on each corner of a paper towel; syrup, lemon juice, vinegar, and water. then he put a snail in the center of the paper towel to see how it would respond. which observation is evidence of the snails response to stimuli?

a. the snail likes the water
b. the snail preferred the vinegar
c. the snail moved toward the syrup
d. the snail does not like lemon juice