When asked why she participated with other students in a protest against the treatment of women on her university campus, Kai says that all human beings should have equal rights. According to Kai, the university has rules that are unfair to women; and she is morally against such discriminatory practices. Kai is likely operating at the reasoning level of Lawrence Kohlberg's theory.

Post Conventional.

Explanation:

In agreement with the Piaget's theory of moral development, Kohlberg developed the theory of the Kohlberg's Stages of Moral Development.

This theory categorised the development of morality in three levels namely Pre-conventional, Conventional, and post-conventional morality.

In the given case, Kai is at the post-conventional morality stage.

In this stage, the morality of the individual is based on self-chosen principles. Their morals are grounded on the principles of rights and justice.

The morals of Kai are based on the principle of rights and justice and thus is an example of post-conventional morality.