Mr. mack presented the following objective: "watch the video and respond to the main character's dilemma as though you were walking in her shoes." this objective fits the taxonomy of what domain

Affective domain

Explanation:

Affective domain  is defined as structure that carries emotions , behavior and feeling of a person and they way he/she tends to deal and process in various situation with these factors. Emotional response of people and experiencing other's feelings are feature of this domain.

This domain consist of responding,receiving ,valuing,organization and characterization for understanding and the manner for responding to feeling and attitude of others .

According to the question,Mr. Mack is showing affective domain's taxonomy as he is watching video and then giving response on the situation of the main character.Thus, he is understanding the feeling of the main character through his emotions.