Answer:
Taste aversion.
Explanation:
Taste aversion may be defined as the association of the taste with of a particular food with the symptoms that are caused by toxic or poisonous substance. This is a type of adaptive trait.
Both Rita and Dmitri have donuts but after sometime Dmitri developed the taste aversion for the donuts. They stop eating donuts for the next time because of the toxic substance present in the donut.
Thus, the correct answer is taste aversion.