Jack wants to be an engineer. When his supervisor at the pizza company he works for criticizes him for his lack of motivation, Jack is completely indifferent. When his physics professor gives him a poor grade on a project, Jack is upset and his self$-$esteem plummets. According to Markus, what accounts for this difference in response?

Jack is unable to respond to the generalized other.

Jack has yet to master symbolic interaction in certain situations.

Jack identifies himself as someone competent in the sciences.

Jack has an underdeveloped material self.