Which of the following is a nucleophilic addition step? 
Definitions:
Representativeness Heuristic
A cognitive shortcut that involves making judgments based on how much one event resembles another.
Stereotypes
Oversimplified, generalized ideas about a group of people that often lead to prejudiced attitudes or behavior.
Phonemes
Phonemes are the smallest units of sound in a language that can distinguish one word from another, such as the distinction between the consonant sounds in "pad" and "bad."
Emotion
Complex psychological states involving thoughts, feelings, physiological changes, and behaviors.
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